View source for Controlled-access highway

{{Short description|Highway designed for high-speed, regulated traffic flow}}
{{Redirect-multi|3|Control of access|Freeway|Motorway|the security concept|Access management|other uses|Freeway (disambiguation)|and|Motorway (disambiguation)}}
{{Use dmy dates|date=July 2018}}
{{Use Oxford spelling|date=January 2014}}
[[File:US 131, M-6, 68th St interchange.jpg|thumb|upright=1.35|The [[cloverleaf interchange]] between [[U.S. Route 131|US&nbsp;131]], [[M-6 (Michigan highway)|M-6]] and 68th Street in [[Cutlerville, Michigan]], United States, shows many of the features of controlled-access highways: entry and exit ramps, [[median strip]]s for opposing traffic, no [[at-grade intersections]] and no direct access to properties.]]
[[File:CH-Hinweissignal-Autobahn.svg|thumb|150px|This sign, or some variation thereof, is used to denote controlled-access highways in many countries.]]
[[File:King's Highway 401 - Ontario (4118726412) (filtered).jpg|thumb|Typical overhead signage on Ontario's [[400-series highways|King's Highway]] network featuring an airport [[pictogram]], distances to upcoming interchanges, and lane guidance.  These signs have a blue background rather than the usual green to denote the [[local-express lanes]].]]

A '''controlled-access highway''' is a type of [[highway]] that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are '''freeway''',{{efn|Used in the western part of the United States, parts of Australia, parts of Canada, and South Africa.}} '''motorway''',{{efn|Used in the United Kingdom, Hong Kong, Ireland, Pakistan, New Zealand, and parts of Australia.}} and '''expressway'''.{{efn|Used in parts of the United States, parts of Canada, Australia, China, India, Japan, the Philippines, South Korea, and an official term in the UK and Hong Kong. In some parts of the United States, this also designates a type of limited-access road of lower class than a freeway. In the UK it officially refers to main roads of a lower class than a motorway. Depending on the region, the term is also often applied to [[limited-access road]]s, sometimes combining them with controlled-access highways into a single category.<ref>{{Cite report|last=Department for Transport|title=Road Investment Strategy: Strategic Vision|url=https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/383145/dft-ris-strategic-vision.pdf|website=gov.uk|page=48}}</ref>}} Other similar terms include ''[[wikt:throughway|throughway]]'' or ''thruway''{{efn|Columbia Guide to Standard American English: "''Thruway'' is the Standard spelling of the word meaning a 'high-speed, limited access, multiple-lane highway. [...] ''Throughway'' is a variant."}} and ''[[parkway]]''. Some of these may be [[limited-access highways]], although this term can also refer to a class of highways with somewhat less isolation from other traffic.

In countries following the [[Vienna Convention on Road Signs and Signals|Vienna convention]], the motorway qualification implies that walking and parking are forbidden.

A fully controlled-access highway provides an unhindered flow of traffic, with no [[traffic signals]], [[Intersection (road)|intersections]] or [[frontage|property access]]. They are free of any [[at-grade intersection|at-grade crossings]] with other roads, railways, or pedestrian paths, which are instead carried by [[overpass]]es and [[underpass]]es. Entrances and exits to the highway are provided at [[Interchange (road)|interchanges]] by slip roads (ramps), which allow for speed changes between the highway and [[arterial road|arterials]] and [[collector road]]s. On the controlled-access highway, opposing directions of travel are generally separated by a [[median strip]] or central reservation containing a [[traffic barrier]] or grass. Elimination of conflicts with other directions of traffic dramatically improves safety,<ref name="etsc 2014"/> while increasing traffic capacity and speed.

Controlled-access highways evolved during the first half of the 20th century. [[Italy]] was the first country in the world to build controlled-access highways reserved for fast traffic and for motor vehicles only.<ref name=independent/><ref name="motorwebmuseum"/> Italy opened its first ''[[autostrada]]'' in 1924, [[Autostrada A8 (Italy)|A8]], connecting [[Milan]] to [[Varese]]. Germany began to build its first controlled-access ''[[autobahn]]'' without speed limits ({{convert|30|km|mi|disp=sqbr}} on what is now [[Bundesautobahn 555|A555]], then referred to as a ''dual highway'') in 1932 between [[Cologne]] and [[Bonn]]. It then rapidly constructed the first<ref>{{cite web | url=https://www.britannica.com/topic/Avus-highway | title=Avus highway &#124; German expressway &#124; Britannica }}</ref> nationwide system of such roads. The first [[North America]]n ''freeways'' (known as parkways) opened in the [[New York City]] area in the 1920s. Britain, heavily influenced by the railways, did not build its first ''motorway'', the [[Preston By-pass]] ([[M6 motorway|M6]]), until 1958.

Most technologically advanced nations feature an extensive network of freeways or motorways to provide high-capacity urban travel, or high-speed rural travel, or both. Many have a national-level or even international-level (e.g. [[International E-road network|European E route]]) system of [[route number]]ing.

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==Definition standards==
[[File:Hämeenlinnanväylä.jpg|thumb|right|An aerial view of [[Finnish national road 3]] ([[European route E12|E12]]), a motorway between [[Tampere]] and [[Helsinki]] in [[Finland]]]]
[[File:E6-E20 Olskroksmotet in Gothenburg.png|thumb|The west coast motorway [[European route E6|E6]]/[[European route E20|E20]] in central [[Gothenburg]], [[Sweden]]]]
[[File:Autostrada del Sole - Italy - panoramio.jpg|thumb|[[Autostrada A1 (Italy)|Autostrada A1]] ([[European route E35|E35]]/[[European route E45|E45]]) runs through [[Italy]] linking some of the [[List of cities in Italy|largest cities of the country]]: [[Milan]], [[Bologna]], [[Florence]], [[Rome]] and [[Naples]]]]

There are several international standards that give some definitions of words such as motorways, but there is no formal definition of the English language words such as ''freeway'', ''motorway'', and ''expressway'', or of the equivalent words in other languages such as {{lang|fr|autoroute}}, {{lang|de|Autobahn}}, {{lang|it|autostrada}}, {{lang|sh-Latn|autocesta, autoput}}, that are accepted worldwide—in most cases these words are defined by local statute or design standards or regional international treaties. Descriptions that are widely used include:

;[[Vienna Convention on Road Signs and Signals]]

::"Motorway" means a road specially designed and built for motor traffic that does not serve properties bordering on it, and that:
:# Is provided, except at special points or temporarily, with separate carriageways for the two directions of traffic, separated from each other either by a dividing strip not intended for traffic or, exceptionally, by other means;
:# Does not cross at level with any road, railway or tramway track, or footpath; and,
:# Is specially sign-posted as a motorway;<ref>{{cite web |url=http://www.unece.org/fileadmin/DAM/trans/conventn/signalse.pdf |title=Convention on Road Signs and Signals, Done at Vienna on 8 November 1968 |access-date=13 May 2016 |url-status=dead |archive-url=https://web.archive.org/web/20160304210332/http://www.unece.org/fileadmin/DAM/trans/conventn/signalse.pdf |archive-date=4 March 2016 }}</ref>

One green or blue symbol (like [[File:Freeway in Iran.svg|25px]]) appears at motorway entry in countries that follow the Vienna Convention. Exits are marked with another symbol: [[File:Sweden road sign E2.svg|25px]].

The definitions of "motorway" from the [[OECD]]<ref>{{cite web |url = http://stats.oecd.org/glossary/detail.asp?ID=4008 |publisher = OECD |title = Glossary of Statistical Terms |date = 26 February 2004 |access-date = 3 September 2009 |url-status = live |archive-url = https://web.archive.org/web/20110810035415/http://stats.oecd.org/glossary/detail.asp?ID=4008 |archive-date = 10 August 2011 |df = dmy-all }}</ref> and [[World Road Association|PIARC]]<ref>Dictionary: PIARC Road Dictionary/ English</ref> are almost identical.

;[[British Standards]]

::''Motorway'': Limited-access [[dual carriageway]] road, not crossed on the same level by other [[Lane|traffic lanes]], for the exclusive use of certain classes of motor vehicle.

;[[Institute of Transportation Engineers|ITE]] (including [[Canadian Institute of Transportation Engineers|CITE]])
::''Freeway'': A divided major roadway with full control of access and with no crossings at grade. This definition applies to toll as well as toll-free roads.
:::''Freeway A'': This designates roadways with greater visual complexity and high traffic volumes. Usually this type of freeway will be found in metropolitan areas in or near the central core and will operate through much of the early evening hours of darkness at or near design capacity.
:::''Freeway B'': This designates all other divided roadways with full control of access where lighting is needed.

In the [[European Union]], for statistical and safety purposes, some distinction might be made between ''motorway'' and ''expressway''. For instance a principal arterial might be considered as:
<blockquote>Roads serving long distance and mainly interurban movements. Includes motorways (urban or rural) and expressways (road which does not serve properties bordering on it and which is provided with separate carriageways for the two directions of traffic). Principal arterials may cross through urban areas, serving suburban movements. The traffic is characterized by
high speeds and full or partial access control (interchanges or junctions controlled by traffic lights). Other roads leading to a principal arterial are connected to it through side collector roads.<ref name="cadas_glossary">{{cite web |title = Common Accident Data: Reference Guide |version = Version. 3.4 |date = April 2015 |url = http://ec.europa.eu/transport/road_safety/pdf/statistics/cadas_glossary.pdf |website = Ec.europa.eu |access-date = 18 July 2017 |url-status = dead |archive-url = https://web.archive.org/web/20160604161236/http://ec.europa.eu/transport/road_safety/pdf/statistics/cadas_glossary.pdf |archive-date = 4 June 2016 |df = dmy-all }}</ref></blockquote> In this view, CARE's definition stands that a motorway is understood as a <blockquote>public road with dual carriageways and at least two lanes each way. All entrances and exits are signposted and all interchanges are grade separated. Central barrier or median present throughout the road. No crossing is permitted, while stopping is permitted only in an emergency. Restricted access to motor vehicles, prohibited to pedestrians, animals, pedal cycles, mopeds, agricultural vehicles. The minimum speed is not lower than {{convert|50|km/h|mph|abbr=on|disp=sqbr}} and the maximum speed is not higher than {{convert|130|km/h|mph|abbr=on|disp=sqbr}} (except [[Germany]] where no speed limit is defined).<ref name="cadas_glossary" /></blockquote>

Motorways are designed to carry heavy traffic at high speed with the lowest possible number of accidents. They are also designed to collect long-distance traffic from other roads, so that conflicts between long-distance traffic and local traffic are avoided.<ref>Elvik, Vaa, 2004{{full citation needed|date=May 2016}}</ref> According to the common European definition, a motorway is defined as "a road, specially designed and built for motor traffic, which does not serve properties bordering on it, and which: (a) is provided, except at special points or temporarily, with separate carriageways for the two directions of traffic, separated from each other, either by a dividing strip not intended for traffic, or exceptionally by other means; (b) does not cross at level with any road, railway or tramway track, or footpath; (c) is specially sign-posted as a motorway and is reserved for specific categories of road motor vehicles."<ref>Eurostat / UNECE / ECMT, 2003{{full citation needed|date=May 2016}}</ref> Urban motorways are also included in this definition. However, the respective national definitions and the type of roads covered may present slight differences in different EU countries.<ref>NTUA, 2005{{full citation needed|date=May 2016}}</ref>

==History==
[[File:Autostrada between Varese and Como.jpg|thumb|right|The Italian ''[[Autostrada dei Laghi]]'' ("Lakes Motorway" in the 1950s; now parts of the [[Autostrada A8 (Italy)|Autostrada A8]] and the [[Autostrada A9 (Italy)|Autostrada A9]]), the first controlled-access highway ever built in the world<ref name="independent"/><ref name="motorwebmuseum"/>]]

The first version of modern controlled-access highways evolved during the first half of the 20th century. The [[Long Island Motor Parkway]] on [[Long Island]], [[New York (state)|New York]], opened in 1908 as a private venture, was the world's first limited-access roadway. It included many modern features, including [[banked turn]]s, [[guard rail]]s and reinforced concrete [[Asphalt concrete|tarmac]].<ref name="NYT_LIMP">{{cite news |last = Patton |first = Phil |date = 9 October 2008 |title = A 100-Year-Old Dream: A Road Just for Cars |work = The New York Times <!-- |access-date = 16 September 2009--> }}</ref> Traffic could turn left between the parkway and connectors, crossing oncoming traffic, so it was not a controlled-access highway (or "freeway" as later defined by the federal government's [[Manual on Uniform Traffic Control Devices]]).

Modern controlled-access highways originated in the early 1920s in response to the rapidly increasing use of the [[automobile]], the demand for faster movement between cities and as a consequence of improvements in paving processes, techniques and materials. These original high-speed roads were referred to as "[[dual highway]]s" and have been modernized and are still in use today.

[[File:Bundesarchiv Bild 146-1979-025-30A, Reichsautobahn mit zwei KdF-Wagen.jpg|thumbnail|left|A section of the German [[Reichsautobahn]] in 1943, the first nationwide highway system.]]
Italy was the first country in the world to build controlled-access highways reserved for fast traffic and for motor vehicles only.<ref name=independent>{{Cite news |first=Thea |last=Lenarduzzi |url=http://www.independent.co.uk/travel/europe/the-worlds-first-motorway-piero-puricellis-masterpiece-is-the-focus-of-an-unlikely-pilgrimage-a6840816.html|title=The motorway that built Italy: Piero Puricelli's masterpiece|date=30 January 2016|newspaper=[[The Independent]]|access-date=12 May 2022}}</ref><ref name="motorwebmuseum">{{cite web|url=https://www.motorwebmuseum.it/en/places/varese/the-milano-laghi-by-piero-puricelli-the-first-motorway-in-the-world/|title=The 'Milano-Laghi' by Piero Puricelli, the first motorway in the world|access-date=10 May 2022}}</ref> The ''[[Autostrada dei Laghi]]''  ("Lakes Motorway") connected [[Milan]] to [[Lake Como]] and [[Lake Maggiore]], and is now parts of the [[Autostrada A8 (Italy)|A8]] and [[Autostrada A9 (Italy)|A9]] motorways. It was devised by [[Piero Puricelli]] and was inaugurated in 1924.<ref name="motorwebmuseum"/> This motorway, called ''[[autostrada]]'', contained only one lane in each direction and no interchanges. The Bronx River Parkway was the first road in North America to utilize a median strip to separate the opposing lanes, to be constructed through a park and where intersecting streets crossed over bridges.<ref>{{cite news |title = Built to Meander, Parkway Fights to Keep Measured Pace |work = [[The New York Times]] |date = 6 June 1995 |url = https://www.nytimes.com/1995/06/06/nyregion/built-to-meander-parkway-fights-to-keep-measured-pace.html |access-date = 13 April 2010 |url-status = live |archive-url = https://web.archive.org/web/20130514214222/http://www.nytimes.com/1995/06/06/nyregion/built-to-meander-parkway-fights-to-keep-measured-pace.html |archive-date = 14 May 2013 |df = dmy-all }}</ref><ref>{{cite news |title = Bronx River Parkway on an Endangered List |first = Roberta |last = Hershenson |work = The New York Times |date = 18 June 1995 |url = https://www.nytimes.com/1995/06/18/nyregion/bronx-river-parkway-on-an-endangered-list.html |access-date = 13 April 2010 |url-status = live |archive-url = https://web.archive.org/web/20130514195215/http://www.nytimes.com/1995/06/18/nyregion/bronx-river-parkway-on-an-endangered-list.html |archive-date = 14 May 2013 |df = dmy-all }}</ref> The [[Southern State Parkway]] opened in 1927, while the [[Long Island Motor Parkway]] was closed in 1937 and replaced by the [[Northern State Parkway]] (opened 1931) and the contiguous [[Grand Central Parkway]] (opened 1936). In Germany, construction of the [[Bundesautobahn 555|Bonn-Cologne Autobahn]] began in 1929 and was opened in 1932 by [[Konrad Adenauer]], then the mayor of [[Cologne]].<ref>{{cite web |url = http://german.about.com/library/blgermyth08.htm |title = German Myth 8: Hitler and the Autobahn |work = German.about.com |url-status = dead |archive-url = https://web.archive.org/web/20060508183403/http://german.about.com/library/blgermyth08.htm |archive-date = 8 May 2006 |df = dmy-all }}</ref> The German [[Autobahn]] became the first nationwide highway system.<ref>{{cite web | url=https://www.britannica.com/technology/Autobahn-German-highway | title=Autobahn &#124; High-Speed, Safety, Efficiency &#124; Britannica | date=16 August 2024 }}</ref>

In [[Canada]], the first precursor with semi-controlled access was [[The Middle Road]] between [[Hamilton, Ontario|Hamilton]] and [[Toronto]], which featured a median divider between opposing traffic flow, as well as the nation's first [[cloverleaf interchange]]. This highway developed into the [[Queen Elizabeth Way]], which featured a cloverleaf and [[trumpet interchange]] when it opened in 1937, and until the [[Second World War]], boasted the longest illuminated stretch of roadway built.<ref>{{cite book |title = From Footpaths to Freeways |last1 = Shragge |first1 = John |last2 = Bagnato |first2 = Sharon |name-list-style = amp |publisher = Ontario Ministry of Transportation and Communications, Historical Committee |year = 1984 |page = 55 |isbn = 978-0-7743-9388-1 }}</ref> A decade later, the first section of [[Highway 401]] was opened, based on earlier designs. It has since gone on to become the busiest highway in the world.

The word ''freeway'' was first used in February 1930 by [[Edward Bassett|Edward M. Bassett]].<ref name="bassett">{{cite journal |first = Edward M. |last = Bassett |title = The Freeway: A New Kind of Thoroughfare |journal = American City |volume = 42 |date = February 1930 |page = 95 }}</ref><ref>{{cite book |first = Jeremy |last = Korr |chapter = Physical and Social Constructions of the Capital Beltway |title = The World Beyond the Windshield: Roads and Landscapes in the United States and Europe |editor1-first = Christof |editor1-last = Mauch |editor2-first = Thomas |editor2-last = Zeller |name-list-style = amp |location = Athens |publisher = Ohio University Press |year = 2008 |page = 195 |isbn = 9780821417676 |chapter-url=https://books.google.com/books?id=P2gtN_4_3HIC&pg=PA53}}</ref><ref>{{cite book |first = Thomas L. |last = Karnes |title = Asphalt and Politics: A History of the American Highway System |url = https://archive.org/details/asphaltpoliticsh00karn |url-access = limited |location = Jefferson, NC |publisher = McFarland & Co. |year = 2009 |page = [https://archive.org/details/asphaltpoliticsh00karn/page/n139 131] |isbn = 9780786442829 }}</ref><ref name="Swift_Page_110">{{cite book |last1=Swift |first1=Earl |title=The Big Roads: The Untold Story of the Engineers, Visionaries, and Trailblazers Who Created the American Superhighways |date=2011 |publisher=Houghton Mifflin Harcourt |location=Boston |isbn=9780547549132 |page=110 |url=https://books.google.com/books?id=59dQ_rwoh3UC&pg=PA110 |access-date=February 27, 2023}}</ref> Bassett argued that roads should be classified into three basic types: highways, [[parkway]]s, and freeways.<ref name="bassett" /> In Bassett's [[Zoning in the United States|zoning]] and [[property law]]-based system, [[abutter|abutting property owners]] have the rights of [[right to light|light]], [[air rights|air]] and access to highways, but not parkways and freeways; the latter two are distinguished in that the purpose of a parkway is recreation, while the purpose of a freeway is movement.<ref name="bassett" /> Thus, as originally conceived, a freeway is simply a strip of public land devoted to movement to which abutting property owners do not have rights of light, air or access.<ref name="bassett" />

==Design==
[[File:Dolphin and Palmetto Expressway Interchange.jpg|thumb|left|[[Interchange (road)|Highway interchange]] between the [[Dolphin Expressway]] and [[Palmetto Expressway]] ([[Dolphin–Palmetto Interchange]]) in [[Miami metropolitan area|Greater Miami, Florida, United States]]]]
[[File:Highway 401.png|thumb|upright=1.0|[[Ontario Highway 401|Highway 401]] in [[Southern Ontario]], Canada. An example of a [[local–express lanes|collector-express]] freeway design, the route features [[dual carriageway|four carriageways]] through [[Toronto]].]]
[[File:autoroute A10 Orléans Ouest.jpg|thumb|The [[A10 autoroute|A10]] near [[Orléans]], France, showing [[hard shoulder]] and emergency telephone. The broken demarcation line for the hard shoulder is specific to France, and serves as a safety reference mark for drivers: the advisory distance from the vehicle ahead is two dashes minimum.]]
Freeways, by definition, have no at-grade [[intersection (road)|intersections]] with other roads, [[railroad]]s or [[multi-use trail]]s. Therefore, no traffic signals are needed and through traffic on freeways does not normally need to stop at traffic signals. Some countries, such as the United States, allow for limited exceptions: some [[movable bridge]]s, for instance the [[Interstate Bridge]] on [[Interstate 5]] between [[Oregon]] and [[Washington (state)|Washington]], do require drivers to stop for [[ship]] traffic.

The crossing of freeways by other routes is typically achieved with grade separation either in the form of [[underpass]]es or [[overpass]]es. In addition to [[sidewalk]]s (pavements) attached to roads that cross a freeway, specialized [[pedestrian]] [[footbridge]]s or [[Subway (underpass)|tunnels]] may also be provided. These structures enable pedestrians and [[cyclist]]s to cross the freeway at that point without a detour to the nearest road crossing.

Access to freeways is typically provided only at grade-separated [[interchange (road)|interchanges]], though lower-standard [[right-in/right-out]] (left-in/left-out in countries that drive on the left) access can be used for direct connections to side roads. In many cases, sophisticated interchanges allow for smooth, uninterrupted transitions between intersecting freeways and busy [[arterial road]]s. However, sometimes it is necessary to exit onto a surface road to transfer from one freeway to another. One example in the United States (notorious for the resulting congestion) is the connection from [[Interstate 70]] to the [[Pennsylvania Turnpike]] ([[Interstate 70]] and [[Interstate 76 (east)|Interstate 76]]) through the town of [[Breezewood, Pennsylvania]].<ref>{{cite news |first = Manuel |last = Roig-Franzia |title = The Town That Stops Traffic: Travelers Encounter Way Station as Way of Life in Breezewood |newspaper =[[The Washington Post]] |date = 22 November 2001 |page = B1 }}</ref>

[[Speed limit]]s are generally higher on freeways and are occasionally nonexistent (as on much of Germany's [[Autobahn]] network). Because higher speeds reduce decision time, freeways are usually equipped with a larger number of [[guide sign]]s than other roads, and the signs themselves are physically larger. Guide signs are often mounted on overpasses or overhead [[Gantry (transport)|gantries]] so that drivers can see where each lane goes. Exit numbers are commonly derived from the exit's distance in miles or kilometres from the start of the freeway. In some areas, there are public [[rest area]]s or [[Rest area|service areas]] on freeways, as well as [[emergency phone]]s on the [[shoulder (road)|shoulder]] at regular intervals.

In the United States, [[milepost]]s usually start at the southern or westernmost point on the freeway (either its terminus or the state line). [[California]], [[Ohio]] and [[Nevada]] use [[California postmile|postmile]] systems in which the markers indicate mileage through the state's individual counties. However, Nevada and Ohio also use the standard milepost system concurrently with their respective postmile systems. California numbers its exits off its freeways according to a milepost system but does not use milepost markers.

[[File:Ireland Road Lanes.svg|thumb|left|upright=0.7|Diagram showing lanes and road layout (Irish road markings)]]

In Europe and some other countries, motorways typically have similar characteristics such as:
* A typical design speed in the range of {{cvt|100|-|130|km/h}}
* Minimum values for horizontal curve radii around {{cvt|750|to|900|m}}.
* Maximum longitudinal gradients typically not exceeding 4% to 5%.
* Cross sections incorporating a minimum of two through-traffic lanes for each direction of travel, with a typical width of {{cvt|3.50|to|3.75|m|ftin}} each, separated by a central median.
* An obstacle-free zone varying from {{cvt|4.5|to|10|m}}, or alternatively installation of appropriate vehicle restraint systems.
* Proper design of grade-separated interchanges to provide for the movement of traffic between two or more roadways on different levels.
* More frequent (compared to other road types) construction of tunnels and overpasses, requiring complex equipment and methods of operation.
* Installation of highly efficient road equipment and traffic control devices.<ref name="ReferenceA">{{cite web |url=https://ec.europa.eu/transport/road_safety/sites/roadsafety/files/pdf/ersosynthesis2018-motorways.pdf |title=Motorways 2018 |publisher=European Road Safety Observatory |access-date=1 September 2021 |url-status=live|archive-url=https://web.archive.org/web/20190608231029/https://ec.europa.eu/transport/road_safety/sites/roadsafety/files/pdf/ersosynthesis2018-motorways.pdf |archive-date=8 June 2019 }}</ref>

===Cross sections===
[[File:Plimoth Plantation Highway2.JPG|thumb|right|The [[Plimoth Patuxet Highway]] in [[Massachusetts]] is a two-lane divided freeway.]]
A controlled access highway may be two lanes known as a [[two-lane expressway]]. They are often undivided, are sometimes built when traffic volumes are low (but may be upgraded later), right-of-way is limited or due to low funding. They may be designed for easy conversion to one side of a four-lane freeway and right of way may already be acquired. (For example, most of the [[Mountain Parkway]] in eastern [[Kentucky]] is two lanes, but work has begun to make all of it four-lane.) These are often called [[Super two]] roads. Several such roads are infamous for a high rate of lethal crashes; an outcome because they were designed for short sight distances (sufficient for freeways without oncoming traffic, but insufficient for the years in service as two-lane road with oncoming traffic). An example of such a "Highway to Hell" was [[European route E4]] from [[Gävle]] to [[Axmartavlan]], Sweden. The high rate of crashes with severe personal injuries on that (and similar) roads did not cease until a median crash barrier was installed, transforming the fatal crashes into non-fatal crashes. Otherwise, freeways typically have at least two lanes in each direction; some busy ones can have as many as 16 or more lanes<ref group= lower-alpha>Portions of the [[Downtown Connector]] in [[Atlanta, Georgia]], have eight lanes in each direction.</ref> in total.

In [[San Diego, California]], [[Interstate 5]] has a similar system of express and local lanes for a maximum width of 21 lanes on a {{convert|2|mi|km|adj=on}} segment between [[Interstate 805]] and [[California State Route 56]]. In [[Mississauga]], Ontario, [[Ontario Highway 401|Highway 401]] uses [[local–express lanes|collector-express lanes]] for a total of 18 lanes through its intersection with [[Ontario Highway 403|Highway 403]]/[[Ontario Highway 410|Highway 410]] and [[Ontario Highway 427|Highway 427]].

These wide freeways may use separate [[collector and express lane]]s to separate through traffic from local traffic, or special [[high-occupancy vehicle lane]]s, either as a special restriction on the innermost lane or a separate roadway, to encourage [[carpool]]ing. These [[HOV lane]]s, or roadways open to all traffic, can be [[reversible lane]]s, providing more capacity in the direction of heavy traffic, and reversing direction before traffic switches. Sometimes a [[collector/distributor road]], a shorter version of a local lane, shifts weaving between closely spaced interchanges to a separate roadway or altogether eliminates it.

In some parts of the world, notably [[frontage road#United States|parts of the US]], [[frontage road]]s form an integral part of the freeway system. These parallel surface roads provide a transition between high-speed "through" traffic and local traffic. Frequent slip-ramps provide access between the freeway and the frontage road, which in turn provides direct access to local roads and businesses.<ref>{{cite book |publisher = Texas Department of Transportation |url = http://onlinemanuals.txdot.gov/txdotmanuals/acm/index.htm |title = Access Management Manual |chapter-url = http://onlinemanuals.txdot.gov/txdotmanuals/acm/frontage_roads.htm |chapter = Chapter 2, Section 5 |url-status = live |archive-url = https://web.archive.org/web/20110721063603/http://onlinemanuals.txdot.gov/txdotmanuals/acm/index.htm |archive-date = 21 July 2011 |df = dmy-all }}</ref>

Except on some two-lane freeways (and very rarely on wider freeways), a [[median strip|median]] separates the opposite directions of traffic. This strip may be as simple as a grassy area, or may include a [[crash barrier]] such as a "[[Jersey barrier]]" or an "Ontario Tall Wall" to prevent [[head-on collision]]s.<ref>{{cite journal |title = Median Barriers Prove Their Worth |journal = Public Works |volume = 123 |issue = 3 |date = March 1992 |pages = 72–73 }}</ref> On some freeways, the two carriageways are built on different alignments; this may be done to make use of available corridors in a mountainous area or to provide narrower corridors through dense [[urban area]]s.{{Citation needed|date=April 2007}}

===Control of access===
Control of access relates to a legal status which limits the types of vehicles that can use a highway, as well as a [[Highway engineering|road design]] that limits the points at which they can access it.

Major [[arterial road]]s will often have ''partial access control'', meaning that side roads will intersect the main road at grade, instead of using interchanges, but driveways may not connect directly to the main road, and drivers must use intersecting roads to access adjacent land. At arterial junctions with relatively quiet side roads, traffic is controlled mainly by two-way stop signs which do not impose significant interruptions on traffic using the main highway. [[Roundabout]]s are often used at busier intersections in Europe because they help minimize interruptions in flow, while traffic signals that create greater interference with traffic are still preferred in North America. There may be occasional interchanges with other major arterial roads. Examples include [[U.S. Route 23 in Ohio|US&nbsp;23]] between [[Ohio State Route 15|SR&nbsp;15]]'s eastern terminus and [[Delaware, Ohio]], along with SR&nbsp;15 between its eastern terminus and [[Interstate 75 in Ohio|I-75]], [[U.S. Route 30 in Ohio|US&nbsp;30]], [[Ohio State Route 29|SR&nbsp;29]]/[[U.S. Route 33 in Ohio|US&nbsp;33]], and [[U.S. Route 35 in Ohio|US&nbsp;35]] in western and central Ohio. This type of road is sometimes called an '''expressway'''.

===Non-motorized access on freeways===
{{Main|Non-motorized access on freeways}}

Freeways are usually limited to motor vehicles of a minimum power or weight; signs may prohibit [[cyclist]]s, [[pedestrian]]s and [[equestrianism|equestrians]] and impose a minimum speed. It is possible for non-motorized traffic to use facilities within the same right-of-way, such as [[sidewalk]]s constructed along freeway-standard [[bridge]]s and [[multi-use path]]s next to freeways such as the [[Suncoast Trail]] along the [[Suncoast Parkway]] in [[Florida]].

[[File:De lucht.jpg|thumb|right|De Lucht Rest Area on the Dutch A2 - a typical rest area in the [[Netherlands]] with services (fuel, refreshments and toilets). The only access is via the highway that it serves.]]
In some US jurisdictions, especially where freeways replace existing roads, [[non-motorized access on freeways]] is permitted. Different states of the United States have different laws. Cycling on freeways in [[Arizona]] may be prohibited only where there is an alternative route judged equal or better for cycling.<ref>{{cite web |url = http://www.azdot.gov/Highways/Traffic/standards/PGP/TM1030.pdf |archive-url = https://web.archive.org/web/20051224050242/http://www.azdot.gov/Highways/Traffic/standards/PGP/TM1030.pdf |url-status = dead |archive-date = 24 December 2005 |publisher = Arizona Department of Transportation |id = PGP 1030 |title = Controlled-Access Highways as Bikeways }}</ref> [[Wyoming]], the second least densely populated state, allows cycling on all freeways. [[Oregon]] allows bicycles except on specific urban freeways in [[Portland, Oregon|Portland]] and [[Medford, Oregon|Medford]].<ref>{{cite web |title = OAR Banning Non-Motorized Travel on Some Interstate Freeways in Oregon |url = http://www.oregon.gov/ODOT/HWY/BIKEPED/docs/freeway_ban.pdf |publisher = Oregon Department of Transportation |access-date = 12 October 2009 |url-status = dead |archive-url = https://web.archive.org/web/20100531211618/http://www.oregon.gov/ODOT/HWY/BIKEPED/docs/freeway_ban.pdf |archive-date = 31 May 2010 }}</ref>

In countries such as the [[United Kingdom]] new motorways require an [[Act of Parliament]] to ensure restricted right of way. Since upgrading an existing road (the "King's Highway") to a full motorway will result in extinguishing the [[Right-of-way (transportation)|right of access]] of certain groups such as pedestrians, cyclists and slow-moving traffic, many controlled access roads are not full motorways.<ref>{{cite web |title = Using the Highway |work = Your Rights: The Liberty Guide to Human Rights |url = http://www.yourrights.org.uk/yourrights/the-right-of-peaceful-protest/using-the-highway.html |date = 18 August 2008 |publisher = Liberty |access-date = 31 January 2013 |url-status = dead |archive-url = https://web.archive.org/web/20130209011328/http://www.yourrights.org.uk/yourrights/the-right-of-peaceful-protest/using-the-highway.html |archive-date = 9 February 2013 |df = dmy-all }}</ref> In some cases motorways are linked by short stretches of road where alternative rights of way are not practicable such as the [[Dartford Crossing]] (the furthest downstream public crossing of the [[River Thames]]) or where it was not economic to build a motorway alongside the existing road such as the former [[A74 road|Cumberland Gap]]. The [[A1 road (Great Britain)|A1]] is a good example of piece-wise upgrading to motorway standard—as of January 2013, the {{convert|639|km|mi|adj=mid|-long}} route had five stretches of motorway (designated as A1(M)), reducing to four stretches in March 2018 with completion of the A1(M) through [[North Yorkshire]].

===Construction techniques===
[[File:Auto put hitna pomoć.jpg|thumb|The Belgrade Urban Motorway, constructed between 1970 and 1977, required demolitions of streets and houses, characteristic of urban motorways. In [[Novi Beograd]], the motorway path was already laid out, requiring no demolitions.]]
The most frequent way freeways are laid out is by building them from the ground up after obstructions such as forestry or buildings are cleared away. Sometimes they deplete farmland, but other methods have been developed for economic, social and even environmental reasons.

Full freeways are sometimes made by converting at-grade expressways or by replacing at-grade intersections with overpasses; however, in the US, any at-grade intersection that ends a freeway often remains an at-grade intersection. Often, when there is a two-lane undivided freeway or expressway, it is converted by constructing a parallel twin corridor, and leaving a median between the two travel directions. The median-side travel lane of the old two-way corridor becomes a passing lane.

Other techniques involve building a new carriageway on the side of a divided highway that has a lot of private access on one side and sometimes has long driveways on the other side since an easement for widening comes into place, especially in rural areas.

When a ''third'' carriageway is added, sometimes it can shift a directional carriageway by {{convert|50|–|200|ft|m|-1|order=flip}} (or maybe more depending on land availability) as a way to retain private access on one side that favours over the other. Other methods involve constructing a service drive that shortens the long driveways (typically by less than {{convert|100|m|ft}}).

==Interchanges and access points==
{{Main|Interchange (road)}}
{{More citations needed section|date=February 2019}}
[[File:High_Five_Interchange_2007.jpg|thumb|The [[High Five Interchange]] in [[Dallas, Texas]], a [[stack interchange]] with elevated entrance and exit ramps connecting [[Interstate 635 (Texas)|Interstate 635]] and [[U.S. Route 75 in Texas|U.S. Route 75]]]]
[[File:Lakalaivan eritasoliittymä 1.jpg|thumb|An aerial view of the Lakalaiva interchange in the [[Tampere Ring Road]] between the [[Finnish national road 3|Highway 3]] ([[European route E12|E12]]) and [[Finnish national road 9|Highway 9]] ([[European route E63|E63]]) near city of [[Tampere]]]]

An interchange or a junction is a highway layout that permits traffic from one controlled-access highway to access another and vice versa, whereas an access point is a highway layout where traffic from a distributor or local road can join a controlled-access highway. Some countries, such as the [[United Kingdom]], do not distinguish between the two, but others make a distinction; for example, [[Germany]] uses the words ''Kreuz'' ("cross") or ''Dreieck'' ("triangle") for the former and ''Ausfahrt'' ("exit") for the latter. In all cases one road crosses the other via a bridge or a tunnel, as opposed to an [[at-grade crossing]].

The inter-connecting roads, or [[slip lane|slip-roads]], which link the two roads, can follow any one of a number of patterns. The actual pattern is determined by a number of factors including local topology, traffic density, land cost, building costs, type of road, etc. In some jurisdictions feeder/distributor lanes are common, especially for [[cloverleaf interchange]]s; in others, such as the United Kingdom, where the [[roundabout interchange]] is common, feeder/distributor lanes are seldom seen.

Motorways in Europe typically differentiate between exits and junctions. An exit leads out of the motorway system, whereas a junction is a crossing between motorways or a split/merge of two motorways. The ''motorway rules'' end at exits, but not at junctions. However, on some bridges, motorways, without changing appearance, temporarily end between the two exits closest to the bridge (or tunnel), and continue as ''dual carriageways''. This is in order to give slower vehicles a possibility to use the bridge. The [[Queen Elizabeth II Bridge]] / [[Dartford tunnel]] at [[London Orbital]] is an example of this. London Orbital or the M25 is a motorway surrounding [[London]], but at the last [[River Thames]] crossing before its mouth, motorway rules do not apply. (At this crossing the London Orbital is labelled A282 instead.)

A few of the more common types of [[Interchange (road)|junction]] are shown below:<ref>{{cite web |url = http://onlinemanuals.txdot.gov/txdotmanuals/rdw/freeways.htm#CHDICAFD |title = Roadway Design Manual |at = 6: Freeways |date = March 2010 |publisher = Texas Department of Transportation |access-date = 28 March 2013 |url-status = live |archive-url = https://web.archive.org/web/20130514043935/http://onlinemanuals.txdot.gov/txdotmanuals/rdw/freeways.htm#CHDICAFD |archive-date = 14 May 2013 |df = dmy-all }}</ref><ref>{{cite web |url = http://www.greenvillesc.gov/publicworks/forms/WoodruffRdCorridorStudy/WoodruffRd_Chapter4.pdf |title = Woodruff Road Corridor Study |at = Chapter 4*: Interchange Modifications |year = 2013 |access-date = 28 March 2013 |url-status = dead |archive-url = https://web.archive.org/web/20130601070459/http://www.greenvillesc.gov/PublicWorks/forms/WoodruffRdCorridorStudy/WoodruffRd_Chapter4.pdf |archive-date = 1 June 2013 |df = dmy-all }}</ref><ref>{{cite web |url = http://www.ukmotorists.com/motorway_signs.asp |title = 13: Motorway Signs, Signals and Road Markings |publisher = ukmotorists.com |work = Road Signs |access-date = 24 April 2012 |url-status = live |archive-url = https://web.archive.org/web/20120529180224/http://www.ukmotorists.com/motorway_signs.asp |archive-date = 29 May 2012 |df = dmy-all }}</ref>

{{gallery
|width = 195
|title = Various interchange layouts
|File:Stackinterchange.svg|[[Stack interchange|Four-level stack]]: used as a major junction, usually for freeway junctions
|File:Knooppunt rotonde3.png|[[Roundabout interchange]]: very common in the United Kingdom as either a junction or exit
|File:Knooppunt klaverblad.svg|[[Cloverleaf interchange|Cloverleaf]]: used mainly as a junction
|File:Parclo_A4.svg|[[Parclo]] (partial cloverleaf) interchange: often used to link a minor road with a junction
|File:Knooppunt trompet.svg|Trumpet interchange: a motorway "T" junction, used where the interchange represents the terminus of one of the two roads; also common on toll roads as it requires only one tollbooth
|File:Split merge.png|Motorway split or merge; basic logic resembles the T-junction
|File:Spui-schematic.svg|[[Single-point urban interchange]], or SPUI; used in dense urban areas to reduce the land footprint of the junction
|File:Diverging diamond redone.svg|[[Diverging diamond interchange]]; designed to improve traffic flow and safety by minimizing turns that must cross oncoming lanes of traffic}}

==Safety==
There are many differences between countries in their geography, economy, traffic growth, highway system size, degree of urbanization and motorization, etc.; all of which need to be taken into consideration when comparisons are made.<ref>{{cite web |url = https://www.fhwa.dot.gov/policyinformation/statistics/2011/2_intro.cfm |title = Introduction: Highway Statistics 2011, Highway Statistics Series |publisher = Federal Highway Administration |access-date = 21 March 2014 |url-status = live |archive-url = https://web.archive.org/web/20140322015717/http://www.fhwa.dot.gov/policyinformation/statistics/2011/2_intro.cfm |archive-date = 22 March 2014 }}</ref> According to some EU papers, safety progress on motorways is the result of several changes, including infrastructure safety and road user behaviour (speed or seat belt use), while other matters such as vehicle safety and mobility patterns have an impact that has not been quantified.<ref name="etsc.eu">{{cite book |first1 = Docile |last1 = Adminaite |first2 = Richard |last2 = Allsop |first3 = Graziella |last3 = Jost |name-list-style = amp |date = March 2015 |url = https://etsc.eu/wp-content/uploads/2015-03-pin-flash-report-28.pdf |title = Ranking EE Progress on Improving Motorway Safety |publisher = European Transport Safety Council |id = PIN Flash Report 28 |access-date = 4 July 2018 }}{{page needed|date= July 2018}}</ref>

===Motorways other roads===
Motorways are the safest roads by design. While accounting for more than one quarter of all kilometres driven, they contributed only 8% of the total number of European road deaths in 2006.<ref name="etsc 2014">{{cite press release |first1 = Graziella |last1 = Jost |first2 = Evgueni |last2 = Pogorelov |name-list-style = amp |date = 19 February 2008 |title = Fate of EU Motorway Safety in Hands of MEPs |url = http://archive.etsc.eu/documents/copy_of_PR%20Motorways%20safety-02.18-final.pdf |publisher = European Transport Safety Council |access-date = 7 April 2014 |url-status = live |archive-url = https://web.archive.org/web/20140408213906/http://archive.etsc.eu/documents/copy_of_PR%20Motorways%20safety-02.18-final.pdf |archive-date = 8 April 2014 |df = dmy-all }}</ref> Germany's Federal Highway Research Institute provided [[International Road Traffic and Accident Database]] (IRTAD) statistics for the year 2010, comparing overall fatality rates with motorway rates (regardless of traffic intensity):
{| class="wikitable sortable plainrowheaders"
|+ Killed per 1&nbsp;billion vehicle km
! rowspan=2| Country
! All roads
! colspan=2| Motorways
|-
!2010
!2010
!2020
|-

! scope="row" | Austria
| align=right | 7.32
| align=right | 2.15
| align=right | 1.28
|-
! scope="row" | Belgium
| align=right | 8.51
| align=right | 2.87
|-
! scope="row" | Czech Republic
| align=right | 16.22
| align=right | 3.38
| align=right | 2.53
|-
! scope="row" | Denmark
| align=right | 5.65
| align=right | 1.92
| align=right | 0.91
|-
! scope="row" | Finland
| align=right | 5.05
| align=right | 0.61
| align=right | 1.24
|-
! scope="row" | France
| align=right | 7.12
| align=right | 1.79
| align=right | 1.56
|-
! scope="row" | Germany
| align=right | 5.18
| align=right | 1.98
| align=right | 1.48
|-
! scope="row" | Slovenia
| align=right | 7.74
| align=right | 3.77
| align=right | 1.01
|-
! scope="row" | Switzerland
| align=right | 5.25
| align=right | 1.04
| align=right | 0.85
|-
! scope="row" | United States
| align=right | 6.87
| align=right | 3.62
| align=right | 4.19<br /><small>(provisional)</small>
|- class="sortbottom"
|colspan="4" |Sources: IRTAD-BAST-2020<ref name="http://www.bast.de IRTAD">{{cite web |title = International Traffic and Accident Data: Selected Risk Values for the Year 2010 |date = December 2012 |url = http://www.bast.de/EN/Publications/Media/Unfallkarten-international-englisch.pdf?__blob=publicationFile |publisher = Bundesanstalt für Straßenwesen (Federal Highway Research Institute) |access-date = 10 September 2013 |format = PDF |url-status = live |archive-url = https://web.archive.org/web/20140407082233/http://www.bast.de/EN/Publications/Media/Unfallkarten-international-englisch.pdf?__blob=publicationFile |archive-date = 7 April 2014 |df = dmy-all }}</ref><ref name="U.S. Highway Statistics 2010">{{cite web |title = Highway Statistics: Table VM-2: Vehicle-miles of travel, by functional system; Table FI-10: Persons fatally injured in motor vehicle crashes, by Federal-aid highways |date = December 2012 |url = https://www.fhwa.dot.gov/policyinformation/statistics/2010/ |publisher = Federal Highway Administration |access-date = 10 September 2013 |url-status = live |archive-url = https://web.archive.org/web/20130907072229/http://www.fhwa.dot.gov/policyinformation/statistics/2010/ |archive-date = 7 September 2013 |df = dmy-all }}</ref>
|}

The German [[autobahn]] network illustrates the safety trade-offs of controlled access highways. The injury crash rate is very low on autobahns,<ref name="http://www.bast.de 2012">{{cite web |title = Traffic and Accident Data: Summary Statistics: Germany |date = December 2012 |url = http://www.bast.de/EN/Publications/Media/Unfallkarten-national-englisch.pdf?__blob=publicationFile |publisher = Bundesanstalt für Straßenwesen (Federal Highway Research Institute) |access-date = 7 April 2014 |format = PDF |url-status = live |archive-url = https://web.archive.org/web/20140408224423/http://www.bast.de/EN/Publications/Media/Unfallkarten-national-englisch.pdf?__blob=publicationFile |archive-date = 8 April 2014 |df = dmy-all }}</ref> while 22 people died per 1,000 injury crashes—although autobahns have a lower rate than the 29 deaths per 1,000 injury accidents on conventional rural roads, the rate is higher than the risk on urban roads. Speeds are higher on rural roads and autobahns than urban roads, increasing the severity potential of a crash.<ref name="www.destatis.de 2012">{{cite web |title = Unfallentwicklung auf deutschen Straßen 2012 |trans-title = Crashes on German Roads 2012 |date = 10 July 2013 |url = https://www.destatis.de/DE/Publikationen/Thematisch/TransportVerkehr/Verkehrsunfaelle/PK_Unfallentwicklung_PDF.pdf?__blob=publicationFile |publisher = Statistisches Bundesamt (Federal Statistics Office) <!-- |quote = (Seite 19) Mit 29 Getöteten je 1 000 Unfälle mit Personenschaden ist das Todesrisiko auf Landstraßen fünfmal höher als auf Innerortsstraßen und auch höher als auf Autobahnen, auf denen 22 Personen je 1000 Unfälle starben. Ein Grund für das wesentlich höhere Risiko auf Landstraßen und Autobahnen ist, dass hier wesentlich schneller gefahren wird als auf Innerortsstraßen und dadurch die Unfallschwere steigt.. (Seite 20) Hauptunfallursache auf Autobahnen ist die „nicht angepasste Geschwindigkeit". Im Jahr 2012 waren mehr als ein Drittel aller Unfälle mit Personenschaden auf Autobahnen Unfälle, bei denen mindestens einem Beteiligten dieses Fehlverhalten zur Last gelegt wurde. Bei insgesamt 6 587 sogenannten Geschwindigkeitsunfällen kamen 179 Menschen zu Tode, das heißt nahezu die Hälfte (46,3 %) aller Getöteten auf Autobahnen... (Seite 20) Hierbei ist allerdings zu berücksichtigen, dass die Unfallursache „nicht angepasste Geschwindigkeit" häufig nicht bedeutet, dass die zulässige Höchstgeschwindigkeit überschritten worden ist. „Nicht angepasste Geschwindigkeit" wird von der Polizei bei einem Unfall auch dann als Ursache erfasst, wenn ein Beteiligter für die vorliegenden Straßen- oder Witterungsverhältnisse zu schnell gefahren ist.--><!--Such a long quote in a language other than English is of no use to our readers, which is why it has been commented out at the present.--> |access-date = 23 September 2013 |format = PDF |url-status = live |archive-url = https://web.archive.org/web/20131114084128/https://www.destatis.de/DE/Publikationen/Thematisch/TransportVerkehr/Verkehrsunfaelle/PK_Unfallentwicklung_PDF.pdf?__blob=publicationFile |archive-date = 14 November 2013 |df = dmy-all }}</ref>

According to ETSC, German motorways without a speed limit, but with a {{convert|130|km/h|mph|abbr=on}} speed recommendation, are 25% more deadly than motorways with a speed limit.<ref>{{cite web |url = http://etsc.eu/german-minister-rules-out-end-to-unlimited-motorway-speeds/ |title = German minister rules out end to unlimited motorway speeds &#124; ETSC |website = Etsc.eu |date = 19 January 2015 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525171445/http://etsc.eu/german-minister-rules-out-end-to-unlimited-motorway-speeds/ |archive-date = 25 May 2017 }}</ref>

Germany also introduced some {{convert|130|km/h|mph|abbr=on}} speed limits on various motorway sections that were not limited. This generated a reduction in deaths in a range from 20% to 50% on those sections.<ref>{{cite web|work= SPEED Fact Sheet|date = February 2008|number = 1 |title = German Autobahn: The Speed Limit Debate|url = http://archive.etsc.eu/documents/Speed_Fact_Sheet_1.pdf}}</ref>

===Causes of accidents===
Speed, in Europe, is considered to be one of the main contributory factors to collisions. Some countries, such as France and Switzerland, have achieved a death reduction by a better monitoring of speed. Tools used for monitoring speed might be an increase in traffic density; improved speed enforcement and stricter regulation leading to driver licence withdrawal; safety cameras; penalty point; and higher fines. Some other countries use automatic time-over-distance cameras (also known as ''section controls'') to manage speed.<ref name="etsc.eu"/>

Fatigue is considered as a risk factor more specific to monotonous roads such as motorways, although such data are not monitored/recorded in many countries.<ref name="etsc.eu"/> According to [[Vinci Autoroutes]], one third of accidents in French motorways are due to sleepy driving.<ref>{{cite web |url = http://publi.vinci.com/vinci_autoroutes/vinci-autoroutes-rapport-activite-2012.pdf |title = Rapport d'activité 2012 |publisher=Vinci Autoroutes |language=fr |access-date = 14 May 2016 |url-status = dead |archive-url = https://web.archive.org/web/20160305131248/http://publi.vinci.com/vinci_autoroutes/vinci-autoroutes-rapport-activite-2012.pdf |archive-date = 5 March 2016 }}</ref>

23% of people killed on French motorways were not wearing seat belts, while 98% of front-seat passengers and 87% of rear-seat passenger wear seat belts.<ref name="etsc.eu"/>

===Fatalities trends===
Although safety results do not change much from year to year, in Europe some changes have been observed: motorway fatalities decreased by 41% during the 2006–2015 decade, but increased by 10% between 2014 and 2015. However, taking into account motorway network length to reflect exposure, data shows that fatalities per thousand kilometres halved between 2006 and 2015.<ref name="europa.eu">{{cite book |author = European Road Safety Observatory |title = Traffic Safety Basic Facts 2017: Motorways |date = June 2017 |url = https://ec.europa.eu/transport/road_safety/sites/roadsafety/files/pdf/statistics/dacota/bfs2017_motorways.pdf |publisher = European Road Safety Observatory |access-date = 4 July 2018 }}{{page needed|date=July 2018}}</ref>

{| class="wikitable sortable plainrowheaders"
|+ EU motorway fatalities
|-
! scope="col" | Year
! scope="col" | Fatalities
! scope="col" | Rate per <br />million population
! scope="col" | Rate per <br />1,000&nbsp;km of motorways
|-
! scope="row" | 2006
|align=right| 3,485
|align=right| 7.1
|align=right| 54.4
|-
! scope="row" | 2010
|align=right| 2,329
|align=right| 4.7
|align=right| 32.9
|-
! scope="row" | 2015
|align=right| 2,048
|align=right| 4.1
|align=right| 27.3
|- class="sortbottom"
|colspan="4" | Source: ''Traffic Safety Basic Facts 2017, Motorways''<ref name="europa.eu"/>
|}

===Toll effect===
{{Main|Shunpiking}}

A [[University of Barcelona]] study suggests that if [[Road pricing|tolls]] are implemented on a controlled-access highway, drivers may [[Shunpiking|seek alternative routes]] to avoid paying the tolls. This may result in a decrease of safety on roads which are not designed for heavy traffic.<ref>{{cite journal |doi=10.1007/s13209-011-0071-6 |title=Motorways, tolls and road safety: Evidence from Europe |journal=SERIEs |volume=3 |issue=4 |pages=457–473 |year=2012 |last1=Albalate |first1=Daniel |last2=Bel |first2=Germà |doi-access=free |hdl=10419/77726 |hdl-access=free }}</ref>

===Safety in urban areas===
In the United Kingdom, there are very few studies regarding the impact of road traffic accidents from existing and new urban motorways.<ref>{{cite journal |doi=10.1136/jech-2016-207378 |pmid=27279082 |pmc=5541177 |title=Effects of new urban motorway infrastructure on road traffic accidents in the local area: A retrospective longitudinal study in Scotland |journal=Journal of Epidemiology and Community Health |volume=70 |issue=11 |pages=1088–1095 |year=2016 |last1=Olsen |first1=Jonathan R. |last2=Mitchell |first2=Richard |last3=MacKay |first3=Daniel F. |last4=Humphreys |first4=David K. |last5=Ogilvie |first5=David }}</ref> In particular, new urban motorways do not grant a reduction of traffic accidents.{{citation needed|date=February 2019}}

In Italy, a study performed on urban motorway [[Autostrada A56 (Italy)|A56]] ''Tangenziale di Napoli'' showed that reduction of speed leads to a decrease in accidents.<ref>{{cite journal |doi=10.1016/j.aap.2014.11.022 |pmid=25482322 |title=Effects on speed and safety of point-to-point speed enforcement systems: Evaluation on the urban motorway A56 Tangenziale di Napoli |journal=Accident Analysis & Prevention |volume=75 |pages=164–178 |year=2015 |last1=Montella |first1=Alfonso |last2=Imbriani |first2=Lella Liana |last3=Marzano |first3=Vittorio |last4=Mauriello |first4=Filomena }}</ref>

In [[Marseille]], France, from June 2009 to May 2010, CEREMA, the French centre for studies on risk, mobility and environment, performed a study on ''Marius'', a network of urban motorways. This study established a link between accidents and traffic variables:<ref>{{cite journal |doi=10.1016/j.trpro.2015.09.053 |title=Traffic Indicators, Accidents and Rain: Some Relationships Calibrated on a French Urban Motorway Network |journal=Transportation Research Procedia |volume=10 |pages=31–40 |year=2015 |last1=Aron |first1=Maurice |last2=Billot |first2=Romain |last3=Faouzi |first3=Nour-Eddin EL |last4=Seidowsky |first4=Régine |doi-access=free }}</ref>
* for single vehicle accidents, the 6-minute average speed on the fast lane; and the time headway (on every lane),
* for multiple vehicle accidents, the occupancy, and the time headway (for the middle lane).

The {{convert|150|km|mi|adj=mid|-long}} Marius network counts 292 injury accidents or fatalities for 1.5&nbsp;billion of vehicle-kilometres, that is 189 injury accidents or fatalities for 1&nbsp;billion of vehicle-kilometres.

Some European countries have improved safety of urban motorways, with a set of measures to dynamically manage traffic flow in response to changing volumes, speeds, and incidents, including:
* Variable speed limits, line control, and speed harmonization
* Shoulder running with emergency refuge areas
* Queue warning and variable messaging
* 24/7 monitoring of traffic with cameras and/or in-pavement sensors (both to detect incidents and identify when to reduce speed limits)
* Incident management
* Automated enforcement
* Specialized algorithms for temporary shoulder running, variable speed limits, and/or incident detection and management
* Ramp metering (coordinated or independent function)<ref>{{cite web |title = Freeway Geometric Design for Active Traffic Management in Europe |url = https://international.fhwa.dot.gov/pubs/pl11004/pl11004.pdf |publisher = Federal Highway Administration |date = March 2011 |url-status = live |archive-url = https://web.archive.org/web/20170506195436/https://international.fhwa.dot.gov/pubs/pl11004/pl11004.pdf |archive-date = 6 May 2017 }} {{PD-notice}}</ref>

In 1994, it was assumed that lighting urban motorways would benefit from more safety than unlighted ones.<ref>{{cite web |url = https://highways.dot.gov/public-roads/autumn-1994/comparison-safety-lighting-options-urban-freeways |title = Public Roads - Comparison of The Safety of Lighting Options on Urban Freeways, Autumn 1994 |publisher = Federal Highway Administration |date = 31 January 2017 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170904155135/https://www.fhwa.dot.gov/publications/publicroads/94fall/p94au8.cfm |archive-date = 4 September 2017 }}</ref>

In [[California]], in 2001, a study established, for urban freeways, some relationships among urban freeway accidents, traffic flow, weather, and lighting conditions:<ref>{{cite journal |url = http://www.path.berkeley.edu/sites/default/files/publications/PWP-2001-19.pdf |title = MOU 3007 report.PDF |website = Path.berkeley.edu |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170809080141/http://www.path.berkeley.edu/sites/default/files/publications/PWP-2001-19.pdf |archive-date = 9 August 2017 |date = December 2001 |last1 = Recker |first1 = Wilfred W. |last2 = Golob |first2 = Thomas F. }}</ref>
* it establishes a difference between dry freeways in daylight and wet freeways in darkness
* it establishes that left-lane collisions are more likely induced by volume effects, while right-lane collisions are more closely tied to speed variances in adjacent lanes (in California, people drive in the right lane except when passing).

==Environmental effects==
[[File:Atlanta 75.85.jpg|thumb|right|[[Traffic congestion]], such as this on the [[Downtown Connector]] in [[Atlanta]], is a cause of [[photochemical smog]].]]
[[File:Highway 401 Night Lapse Busy.jpg|thumb|right|Highway lighting can have a negative influence on those living close to the freeway. [[High-mast lighting]] is an alternative as it concentrates the light on the road, but the tall structures can also lead to a [[NIMBY]] effect. Seen here is [[Ontario Highway 401]] through suburban Toronto.]]
[[File:A1 Motorway tunnel near Agios Konstantinos.JPG|thumb|right|alt=A1 Motorway tunnel near Agios Konstantinos|Tunnel on the [[A1 motorway (Greece)|A1 motorway]] in [[Greece]]]]

Controlled-access highways have been constructed both between major cities as well as within them, leading to the sprawling [[suburb]]an development found near most modern cities. Highways have been heavily criticized for the noise,<ref>{{cite news |first = Hugo |last = Martin |title = Sounding Off on Noise: Freeways' Neighbors Struggle to Drown Out Road Racket, Experts Say the Din Creates Mental and Physical Hazards |work = Los Angeles Times |date = 20 April 2003 |page = B1 }}</ref> pollution, and economic shifts they bring.<ref>{{cite book |title = The Death and Life of Great American Cities |first = Jane |last = Jacobs |author-link = Jane Jacobs |title-link = The Death and Life of Great American Cities }}{{full citation needed|date=October 2012}}</ref> Additionally, they have been criticized by drivers for the inefficiency with which they handle peak hour traffic.<ref>{{cite news |first = Sandy |last = McCreery |title = Don't just sit there, enjoy it! |work = [[New Statesman]] |date = 23 July 2001 |page = 23 }}</ref><ref>{{cite magazine |first = Martha |last = Smilgis |title = Trapped Behind the Wheel: Clever Commuters Learn to Live in the Slow Lane |magazine = [[Time (magazine)|Time]] |date = 20 July 1987 |pages = 64–65 }}</ref><ref>{{cite news |first = Gerard |last = Coulombe |title = Doing the Turnpike Crawl |work = The New York Times |date = 6 July 1986 |page = CN16 }}</ref>

Often, rural highways open up vast areas to economic development and municipal services, generally raising property values. In contrast to this, above-grade highways in urban areas are often a source of lowered property values, contributing to [[urban decay]]. Even with overpasses and underpasses, neighbourhoods are divided—especially impoverished ones where residents are less likely to own a car, or to have the political and economic influence to resist construction efforts.<ref>{{cite news |first = Jeffrey |last = Spivak |title = Today's Road Opening Represents Progress, Pain |work = Kansas City Star |date = 27 July 1999 |page = A1 }}</ref> Beginning in the early 1970s, the [[US Congress]] identified freeways and other urban highways as responsible for most of the noise exposure of the US population.<ref name="Senate">{{cite book |title = Noise Pollution and Abatement Act of 1972 |id = S. Rep. No. 1160, 92nd Cong. 2nd session }}</ref> Subsequently, computer models were developed to analyse freeway noise and aid in their design to help minimize noise exposure.<ref>{{cite conference |url = http://www.worldcatlibraries.org/wcpa/top3mset/2930880 |first1 = C. Michael |last1 = Hogan |first2 = Gary L. |last2 = Latshaw |name-list-style = amp |title = The Relationship between Highway Planning and Urban Noise |work = Proceedings of the ASCE, Urban Transportation Division Specialty Conference |date = 21–23 May 1973 |location = Chicago |publisher = American Society of Civil Engineers, Urban Transportation Division |url-status = live |archive-url = https://web.archive.org/web/20070518225130/http://www.worldcatlibraries.org/wcpa/top3mset/2930880 |archive-date = 18 May 2007 |df = dmy-all }}</ref>

Some cities have implemented [[freeway removal]] policies, under which freeways have been demolished and reclaimed as [[boulevard]]s or parks, notably in [[Seoul]] ([[Cheonggyecheon]]), [[Portland, Oregon|Portland]] ([[Harbor Drive]]), [[New York City]] ([[West Side Elevated Highway]]), [[Boston]] ([[Central Artery]]), [[San Francisco]] ([[Embarcadero Freeway]]), [[Seattle]] ([[Alaskan Way Viaduct]]), and [[Milwaukee]] ([[Park East Freeway]]).

An alternative to surface or above-ground freeway construction has been the construction of underground urban freeways using tunnelling technologies. This has been employed in [[Madrid]] and [[Prague]], as well as the [[Australia]]n cities of [[Sydney]] (which has five such freeways), [[Brisbane]] (which has three), and [[Melbourne]] (which has two). This has had the benefit of not creating heavily trafficked surface roads and, in the case of Melbourne's [[EastLink (Melbourne)|EastLink freeway]], prevented the destruction of an ecologically sensitive area.

Other Australian cities face similar problems (lack of available land, cost of home acquisition, aesthetic problems and community opposition). [[Brisbane]], which also has to contend with physical boundaries (the [[Brisbane River]]) and rapid population increases, has embraced underground freeways. There are currently three open to traffic ([[Clem Jones Tunnel]] (CLEM7), [[Airport Link, Brisbane|Airport Link]] and [[Legacy Way]]) and one ([[East-West Link, Brisbane|East-West Link]]) is currently in planning. All of the tunnels are designed to act as an inner-city [[ring road]] or bypass system and include provision for public transport, whether underground or in reclaimed space on the surface.<ref>{{cite web | url=http://www.brisbane.qld.gov.au/BCC:BASE:257180067:pc=PC_1783 | archive-url=https://archive.today/20070617171023/http://www.brisbane.qld.gov.au/BCC:BASE:257180067:pc=PC_1783 | url-status=dead | archive-date=2007-06-17 | title=TransApex - Brisbane City Council| date=2007-06-17}}</ref> However, freeways are not beneficial for road-based public transport services, because the restricted access to the roadway means that it is awkward for passengers to get to the limited number of boarding points unless they drive to them, largely defeating the purpose.<ref>{{cite web |title = Myth: We need big roads anyway, even for sustainable transport |url = https://www.ptua.org.au/myths/sustroads/ |publisher = Public Transport Users Association |access-date = 2018-01-22 |location = Victoria |url-status = live |archive-url = https://web.archive.org/web/20180122235049/https://www.ptua.org.au/myths/sustroads/ |archive-date = 22 January 2018 }}</ref>

In Canada, the extension of Highway&nbsp;401 toward [[Detroit]], known as the [[Ontario Highway 401#Rt. Hon. Herb Gray Parkway|Herb Gray Parkway]], has been designed with numerous tunnels and underpasses that provide land for parks and recreational uses.

Freeway opponents have found that freeway expansion is often self-defeating: expansion simply generates more traffic. That is, even if traffic congestion is initially shifted from local streets to a new or widened freeway, people will begin to use their cars more and commute from more remote locations. Over time, the freeway and its environs become congested again as both the average number and distance of trips increases. This phenomenon is known as [[induced demand]].<ref>{{cite journal |first = Robert |last = Cervero |author-link = Robert Cervero |title = Road Expansion, Urban Growth, and Induced Travel: A Path Analysis |journal = Journal of the American Planning Association |volume = 69 |issue = 2 |date = Spring 2003 |pages = 145–164 |doi = 10.1080/01944360308976303 |s2cid = 18229524 |url = https://escholarship.org/content/qt05x370hr/qt05x370hr.pdf?t=lgnvqo |type = Submitted manuscript }}</ref><ref>{{cite news |first = Hugo |last = Martin |title = Will More Freeways Bring More Traffic? |work = Los Angeles Times |date = 10 April 2002 |page = B1 }}</ref>

Urban planning experts such as Drusilla Van Hengel, Joseph DiMento and Sherry Ryan argue that although properly designed and maintained freeways may be convenient and safe, at least in comparison to uncontrolled roads, they may not expand recreation, employment and education opportunities equally for different ethnic groups, or for people located in certain neighbourhoods of any given city.<ref>{{cite journal |doi=10.1080/0042098993529 |title=Equal Access? Travel Behaviour Change in the Century Freeway Corridor, Los Angeles |journal=Urban Studies |volume=36 |issue=3 |pages=547–562 |year=1999 |last1=Van Hengel |first1=Drusilla |last2=Dimento |first2=Joseph |last3=Ryan |first3=Sherry |bibcode=1999UrbSt..36..547V |s2cid=154924700 }}</ref> Still, they may open new markets to some [[small business]]es.<ref>{{cite book |first = Christy |last = Borth |title = Mankind on the Move: The Story of Highways |location = Washington, DC |publisher = The Automobile Safety Foundation |year = 1969 |pages = 248, 264 }}</ref>

Construction of urban freeways for the US [[Interstate Highway System]], which began in the late 1950s, led to the demolition of thousands of city blocks and the dislocation of many more thousands of people. The citizens of many inner city areas responded with the [[freeway and expressway revolts]]. Through the study of [[federal government of the United States|Washington's]] response, it can be shown that the most effective changes came not from executive or legislative action, but instead from policy implementation. One of the foremost rationales for the creation of the [[United States Department of Transportation]] (USDOT) was that an agency was needed to mediate between the conflicting interests of interstates and cities. Initially, these policies came as regulation of the state highway departments. Over time, USDOT officials re-focused highway building from a national level to the local scale. With this shift of perspective came an encouragement for alternative transportation, and locally based planning agencies.<ref>{{cite journal |last = Mohl |first = Raymond A. |title = The Interstates and the Cities: The US Department of Transportation and the Freeway Revolt, 1966–1973 |journal = The Journal of Policy History |volume = 20 |issue = 2 |year = 2008 |pages = 193–226 |doi = 10.1353/jph.0.0014 |doi-access = free }}</ref>

At present, freeway expansion has largely stalled in the [[United States]], due to a multitude of factors that converged in the 1970s: higher [[due process]] requirements prior to taking of private [[property]], increasing land values, increasing costs for construction materials, local opposition to new freeways in urban cores, the passage of the [[National Environmental Policy Act]] (which imposed the requirement that each new federally funded project must have an [[environmental impact statement]] or report) and falling [[gas tax]] revenues as a result of the nature of the flat-cent tax (it is not automatically adjusted for inflation), the [[tax revolt]] movement,<ref>{{cite journal |first = Brian D. |last = Taylor |title = Public Perceptions, Fiscal Realities, and Freeway Planning: The California Case |journal = Journal of the American Planning Association |volume = 61 |issue = 1 |date = Winter 1995 |pages = 43–59 |doi = 10.1080/01944369508975618 |url = https://escholarship.org/content/qt51m2v0vz/qt51m2v0vz.pdf?t=lpnwwc |type = Submitted manuscript }}</ref> and growing popular support for high-speed mass transit in lieu of new freeways.{{Citation needed|date=May 2013}}

==Route numbering==
{{Main|Route number}}

===United Kingdom===

====Great Britain====
{{Main|Great Britain road numbering scheme}}
[[File:Motorway number zones in England and Wales map.svg|thumb|Motorway number zones of England and Wales]]

===== England and Wales =====
In [[England and Wales]], the numbers of major motorways followed a numbering system separate from that of the A-road network, though based on the same principle of zones.{{citation needed|date=September 2024}} Running clockwise from the [[M1 motorway|M1]], the zones were defined for Zones 1 to 4 based on the proposed [[M2 motorway (Great Britain)|M2]], [[M3 motorway (Great Britain)|M3]] and [[M4 motorway]]s. The [[M5 motorway|M5]] and [[M6 motorway|M6]] numbers were reserved for the other two planned long-distance motorways.{{citation needed|date=September 2024}} The [[Preston Bypass]], the UK's first motorway, should have been numbered A6(M) under the scheme decided upon, but it was decided to keep the number M6 as it had already been applied.{{citation needed|date=September 2024}}

A map ''Showing Future Pattern of Principal National Routes'' was issued by the [[Ministry of War Transport]] in 1946 shortly before the law that allowed roads to be restricted to specified classes of vehicle (the [[Special Roads Act 1949]]) was passed. The first section of motorway, the [[Preston By-pass|M6 Preston Bypass]], opened in 1958, followed by the first major section of motorway (the [[M1 motorway|M1]] between [[Crick, Northamptonshire|Crick]] and Berrygrove in [[Watford]]), which opened in 1959. From then until the 1980s, motorways opened at frequent intervals; by 1972 the first {{Convert|1000|mi|km|order=flip|sigfig=}} of motorway had been built.

While roads outside of urban areas continued to be built throughout the 1970s, opposition to urban routes became more pronounced. Most notably, plans by the [[Greater London Council]] for a series of [[London Ringways|ringways]] were cancelled following extensive [[Road protest in the United Kingdom|road protests]] and a rise in costs. In 1986 the single-ring, [[M25 motorway]] was completed as a compromise. In 1996 the total length of motorways reached {{Convert|2000|mi|km|order=flip}}.

Motorways in Great Britain, as in numerous European countries, will nearly always have the following characteristics:

# No traffic lights (except occasionally on slip roads before reaching the main carriageway).
# Exit is nearly always via a numbered junction and slip road, with rare minor exceptions.
# Pedestrians, cyclists and vehicles below a specified engine size are banned.
# There is a central reservation separating traffic flowing in opposing directions. (The only exception to this is the A38(M) in [[Birmingham]] where the central reservation is replaced by another lane in which the direction of traffic changes depending on the time of day. There was another small spur motorway near [[Manchester]] with no solid central reservation, but this was declassified as a motorway in the 2000s.)
# No roundabouts on the main carriageway. This is only the case on motorways beginning with M (so called 'M' class). In the case of upgraded A roads with numbers ending with M (i.e. Ax(M)), roundabouts may exist on the main carriageway where they intersect 'M' class motorways. In all 'M' class motorways bar two, there are no roundabouts except at the point at which the motorway ends or the motorway designation ends. The only exceptions to this in Great Britain are:
#* the [[M271 motorway|M271]] in [[Southampton]] which has a roundabout on the main carriageway where it meets the M27, but then continues as the M271 after the junction.
#* on the [[M60 motorway|M60]]. This came about as a result of renumbering sections of the [[M62 motorway|M62]] and [[M66 motorway|M66]] motorways near Manchester as the M60, to form a ring around the city. What was formerly the junction between the M62 and M66 now involves the clockwise M60 negotiating a roundabout, while traffic for the eastbound M62 and northbound M66 carries straight on from the M60. This junction, known as [[Simister|Simister Island]], has been criticized for the presence of a roundabout and the numbered route turning off.
#* the A1(M) between the M62 in [[North Yorkshire]] and [[Washington, Tyne and Wear|Washington in Tyne and Wear]] is built to full 'M' class standards without any roundabouts. It has been suggested that this section of the A1(M) should be reclassified as the northern extension of the M1.<ref>[https://www.yorkshireeveningpost.co.uk/news/your-say/the-great-motorway-turn-off-1-2096352 M1]</ref>

It was proposed in 2013 that the Ax(M) format number would be used for the highest standard of a new classification of road referred to in [[England]] as "[https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/212590/action-for-roads.pdf expressways]", which would be roads without normal roundabouts or right turns across the central reservation, and with graded junctions. Such roads would have motorway-style restrictions but emergency reservations rather than standard major motorway-standard hard shoulders.

=====Scotland=====
In Scotland, where the [[Scottish Office]] (superseded by the Scottish Executive in 1999) rather than the [[Department for Transport|Ministry of Transport and Civil Aviation]] had the decision, there is no zonal pattern, but rather the A-road rule is strictly enforced. It was decided to reserve the numbers 7, 8 and 9 for Scotland.{{citation needed|date=September 2024}} The [[M8 motorway (Scotland)|M8]] follows the route of the [[A8 road (Great Britain)|A8]], and the [[A90 road (Great Britain)|A90]] became part of the [[M90 motorway|M90]] when the A90 was re-routed along the path of the [[A85 road (Great Britain)|A85]].

Motorways follow an "M"-format, with two exceptions: the A823(M) near [[Rosyth]] joining the A823 to the M90, and the A74(M) between the English M6 at [[Gretna, Dumfries and Galloway|Gretna]] and the M74 at [[Abington, South Lanarkshire|Abington]].

====Northern Ireland====
In [[Northern Ireland]] a distinct numbering system is used, which is separate from the rest of the [[United Kingdom]], though the classification of roads along the lines of A, B and C is universal throughout the UK and the [[Isle of Man]]. According to a written answer to a [[parliamentary question]] to the [[Department for Infrastructure (Northern Ireland)|Northern Ireland Minister for Regional Development]], there is no known reason as to how Northern Ireland's road numbering system was devised.<ref>{{cite web |url = http://www.niassembly.gov.uk/qanda/writtenans/001215.htm |title = The Northern Ireland Assembly |publisher = Northern Ireland Assembly |access-date = 10 August 2009 |url-status = dead |archive-url = https://web.archive.org/web/20081223010559/http://www.niassembly.gov.uk/qanda/writtenans/001215.htm |archive-date = 23 December 2008 }}</ref> However motorways, as in the rest of the UK, are numbered M, with the two major motorways coming from [[Belfast]] being numbered [[M1 motorway (Northern Ireland)|M1]] and [[M2 motorway (Northern Ireland)|M2]]. The [[M12 motorway|M12]] is a short spur of the M1, with the [[M22 motorway (Northern Ireland)|M22]] being a short continuation (originally intended to be a spur) of the M2. There are two other motorways, the short [[M3 motorway (Northern Ireland)|M3]], the [[M5 motorway (Northern Ireland)|M5]] and a motorway section of the [[A8 road (Northern Ireland)|A8 road]], known as the [[A8(M) motorway (Northern Ireland)|A8(M)]].

===Ireland===
[[File:IMG 3245w.jpg|thumb|Signage on the [[M6 motorway (Ireland)|M6]] near [[Kinnegad]] in [[Republic of Ireland|Ireland]]. The pictogram of a dual carriageway traversed by an overpass is used in many European countries to indicate the start of motorway regulations. In this case the appropriate motorway number is shown and in accordance with Irish practice a continuous yellow line indicates a motorway rather than a [[high-quality dual carriageway]] (HQDC).]]

In [[Republic of Ireland|Ireland]], since the passage of the Roads Act 1993, all motorways are part of, or form, [[national primary road]]s. These routes are numbered in series, (usually, radiating anti-clockwise from [[Dublin]], starting with the N1/M1) using numbers from 1 to 33 (and, separately from the series, 50). Motorways use the number of the route of which they form part, with an M prefix rather than N for national road (or in theory, rather than R for ''regional road'').<ref name="Roads Act 1993">{{cite web |url = http://www.transport.ie/upload/general/7616-0.pdf |title = Roads Act 1993 (Classification of National Roads) Order 2006 |publisher = Department of Transport (Republic of Ireland) |year = 2006 |access-date = 8 April 2007 |url-status = dead |archive-url = https://web.archive.org/web/20081217221416/http://www.transport.ie/upload/general/7616-0.pdf |archive-date = 17 December 2008 }}</ref> In most cases, the motorway has been built as a bypass of a road previously forming the national road (e.g. the [[M7 motorway (Ireland)|M7]] bypassing roads previously forming the [[N7 road (Ireland)|N7]])—the bypassed roads are reclassified as [[Regional road (Ireland)|regional roads]], although updated signposting may not be provided for some time, and adherence to signage colour conventions is lax (regional roads have black-on-white directional signage, national routes use white-on-green).

Under the previous legislation, the Local Government (Roads and Motorways) Act 1974, motorways theoretically existed independently to national roads. However, the short sections of motorway opened during this act, except for the M50, always took their number from the national road that they were bypassing. The older road was not downgraded at this point (indeed, regional roads were not legislated for at this stage). Older signage at certain junctions on the M7 and M11 can be seen reflecting this earlier scheme, where for example N11 and M11 can be seen coexisting.

The [[M50 motorway (Ireland)|M50]], an entirely new national road, is an exception to the normal inheritance process, as it does not replace a road previously carrying an N number. The M50 was nevertheless legislated in 1994 as the N50 route (it had only a short section of non-motorway section from the Junction&nbsp;11 [[Tallaght]] to Junction&nbsp;12 [[Firhouse]] until its extension as the Southern Cross Motorway). The M50's designation was chosen as a recognisable number. As of 2010, the N34 is the next unused national primary road designation. In theory, a motorway in Ireland could form part of a regional road.<ref name="Roads Act 1993"/>

=== Australia ===
{{Main|Freeways in Australia}}

In [[Australia]], highway and motorway (also called freeway or expressway) numbers either use alphanumeric route markers with M prefix for motorways, freeways and expressways or national/state route markers.

Before the implementation of alpha-numeric route markers, controlled-access highways were marked with a Metroad, National Highway, National Route or State Route Marker. In [[Sydney]], Metroad route markers were used for motorways and freeways, except the [[Pacific Motorway (Sydney–Newcastle)|Pacific Motorway]] (then F3 Freeway), which was marked with a National Highway marker. In [[Brisbane]], Metroad, State routes were used for motorways and freeways. In [[Melbourne]], all motorways and freeways used State Route markers. In Western Australia, National Route markers are used for expressways and freeways.

After the implementation of alphanumeric route markers, all route markers being used for motorways and freeways in Brisbane, Melbourne and Sydney were replaced with a M marker. In Western Australia, they have not implemented the new system yet.

<gallery>
File:AUS Alphanumeric Route M1.svg|Alphanumeric route marker. Replaced all previous route markers except Western Australia.
File:Australian state route 77.svg|State Route marker, used for Motorways in Western Australia and Queensland (only Smith Street Motorway and Sunshine Motorway).
File:AUS Metroad 1.svg|Metroad (fell out of use), were used in Metropolitan Sydney and Brisbane.
File:AUROUTE32.png|National Route marker (fell out of use), were used in Sydney and Western Australia.
File:Australian national highway 87.svg|National Highway, used for some freeways in Tasmania.
</gallery>

===Elsewhere===
[[File:Loc.-Lugano.PNG|thumb|right|Sign on a Swiss ''Autostrada'' (A2/E35 near [[Lugano]], Switzerland)]]

In [[Hungary]], similar to Ireland, motorway numbers can be derived from the original national highway numbers (1–7), with an M prefix attached, e.g. [[M7 motorway (Hungary)|M7]] is on the route of the old Highway 7 from [[Budapest]] towards [[Lake Balaton]] and [[Croatia]]. New motorways not following the original Budapest-centred radial highway system get numbers M8, M9, etc., or M0 in the case of the ring road around Budapest.

In the [[Netherlands]], motorway numbers can be derived from the original national highway numbers, but with an A (''[[List of motorways in the Netherlands|Autosnelweg]]'') prefix attached, like [[A9 motorway (Netherlands)|A9]].

[[File:Autobahn 10-999.png|thumb|Numbering scheme in Germany]]

In [[Germany]] federal motorways have the prefix A (''[[Autobahn]]''). If the following number is odd, the motorway generally follows a north–south direction, while even-numbered motorways generally follow an east–west direction. Other controlled-access roads (dual carriageways) in Germany can be federal highways (''Bundesstraßen''), state highways (''Landesstraßen''), district highways (''Kreisstraßen'') and city highways (''Stadtstraßen''), each with their own numbering system.

[[File:Autostrada A12 Italia exit Viareggio 01.JPEG|thumb|Italian [[Autostrada A12 (Italy)|Autostrada A12]] ([[European route E80|E80]]) traffic sign]]

In [[Italy]], motorways follow a single numbering, even if managed by different concessionaire companies: they are all marked with the letter "A" (for ''[[autostrada]]''; "RA" in the case of motorway junctions, with the exception of the [[Bereguardo]]-[[Pavia]] junction numbered on the signs as [[Autostrada A53 (Italy)|Autostrada A53]], and "T" for the international [[Alps|Alpine]] tunnels) followed by a number. Therefore a motorway with the same numbering can be managed by different concessionaire companies (for example the [[Autostrada A23 (Italy)|Autostrada A23]] is managed for a stretch by {{ill|Società Autostrade Alto Adriatico|it}} and for the remaining stretch by [[Autostrade per l'Italia]]<ref>{{Cite web|url=http://www.programmazioneeconomica.gov.it/wp-content/uploads/2019/07/esito-CIPE-24-luglio-2019-SI-PUBBLICHI.pdf|title=CIPE - Esito seduta del 24 luglio 2019|access-date=27 September 2019|language=it}}</ref><ref>{{Cite web|url=http://www.autostradealtoadriatico.it/Home/Company|title=La Società - Società Autostradale Alto Adriatico|access-date=21 September 2019|language=it}}</ref>).

In [[New Zealand]], as well as in [[Brazil]], [[Russia]], [[Finland]], and the [[Scandinavia]]n countries, motorway numbers are derived from the state highway route that they form a part of, but unlike Hungary and Ireland, they are not distinguished from non-motorway sections of the same state highway route. In the cases where a new motorway acts as a bypass of a state highway route, the original state highway is either stripped of that status or renumbered. A low road number means a road suitable for long-distance driving.

In [[Belgium]], motorways but also some dual carriageways have numbers preceded by an A. However, those that also have an E-number are generally referenced with that one. City rings and bypasses have numbers preceded by an R; these also can be either motorways or dual carriageways.

In [[Croatia]], motorway numbering is independent of state route numbering. Motorways are prefixed by an A (for ''[[autocesta]]''), as in many other European countries. Some motorways are the result of an upgrade of an older two-lane road, and carry concurrencies with state routes. In some other cases, such as with the [[A2 (Croatia)|A2]], following the upgrade, the state route was rerouted onto the [[frontage road]].

==By country==
While the design characteristics listed above are generally applicable around the globe, every jurisdiction provides its own specifications and design criteria for controlled-access highways.

===Africa===
{{See also|Trans-African Highway network}}
[[File:Map of Trans-African Highways.PNG|thumb|upright=1.1|Trans-African Highways]]

====Algeria====
[[File:Autoroute française_1.svg|50px|left]]
[[File:Situation Réseau Autoroutier Algérier - Mai 2015 - V.03.png|thumb|upright=1.1|Algerian highways network]]

In [[Algeria]], the motorway network has about {{cvt|2,318|km|mi}} in 2x3 lanes. The network is expanding increasingly, along with other kinds of infrastructure, though this is only true for the northern region of the country, where most of its population lives. And this infrastructure is pretty well developed for [[North Africa]]n standards.

For the moment, the entire Algerian motorway network is toll-free. The toll stations are being finalized and the launch of the motorway toll is scheduled for early 2021.{{Update inline|date=January 2025}} The maximum speed authorized on the entire network is {{cvt|120|km/h|mph}}.

<gallery mode="packed" heights="150px">
File:Autoroute A1 à Oran (Algérie).jpg|[[Algeria East–West Highway|East–West Highway]] near [[Oran]]
File:Autoroute est ouest ghomri.JPG|Autoroute Est-Ouest, near Ghomri, [[Relizane Province]]
File:La vue la plus spectaculaire depuis l'autoroute Est Ouest Bouira Algérie.jpg|[[Autoroute A2 (Algérie)|Autoroute A2]] near Bouira
File:Médéa - Autoroute Nord-Sud المدية - الطريق السريع شمال جنوب 09.jpg|[[Autoroute Nord-Sud (Algérie)|Autoroute Nord-Sud]] near [[Médéa]]
</gallery>

====Egypt====
{{main|Transport in Egypt}}

[[Egypt]] has many multiple-lane, high-speed motorways. Two routes in the [[Trans-African Highway network]] originate in [[Cairo]]. Egypt also has multiple highway links with Asia through the [[Arab Mashreq International Road Network]]. Egypt has a developing motorway network, connecting Cairo with [[Alexandria]] and other cities. Though most of the transport in the country is still done on the national highways, motorways are becoming increasingly an option in road transport within the country. The existing motorways in the country are:

* Cairo–Alexandria Desert Road: Running between Cairo and Alexandria, with an extension of {{cvt|215|km|mi}}, it is the main motorway in Egypt.
* International Coastal Road: It runs from Alexandria to [[Port Said]], along the northern [[Nile Delta]]. It has a length of {{cvt|280|km|mi}}. Also, among other cities, it connects [[Damietta]] and [[Baltim]].
* Geish Road: It runs between [[Helwan]] and [[Asyut]], along the [[Nile]], also connecting [[Beni Suef]] and [[Minya, Egypt|Minya]]. Its length is {{cvt|306|km|mi}}.
* Ring Road: It serves as an inner ring-road for Cairo. It has a length of {{cvt|103|km|mi}}.
* Regional Ring Road: It serves as an outer ring road for Cairo, also connecting its suburbs like [[Helwan]] and [[10th of Ramadan City]]. Its length is {{cvt|130|km|mi}}.

====Ethiopia====
{{main|Transport in Ethiopia}}
[[File:Adama (3).jpg|thumb|The [[Addis Ababa–Adama Expressway]]]]

Much of [[Ethiopia]]'s highway network is developing. Road projects now represent around a quarter of the annual infrastructure budget of the Ethiopian government. Additionally, through the Road Sector Development Program (RSDP), the government has earmarked $4&nbsp;billion to construct, repair and upgrade roads over the next decade. Ethiopia has over {{cvt|100,000|km|mi}} of roads. In 2014, the [[Addis Ababa–Adama Expressway]] opened, becoming the first expressway in Ethiopia.

====Kenya====
[[File:Roads in Kenya.svg|thumb|The main roads in Kenya]]

The [[Kenya National Highways Authority]] is responsible for the maintenance, management, development, and rehabilitation of highways. According to the Kenya Roads Board, Kenya has {{convert|160886|km}} of roads. Two routes of the [[Trans-African Highway network]] cross [[Kenya]]: the [[Cairo-Cape Town Highway]] and the [[Lagos–Mombasa Highway]]. Roads in Kenya are divided into classes:

# Class S: "A Highway that connects two or more cities and carries safely a large volume of traffic at the highest speed of operation."
# Class A: "A Highway that forms a strategic route and corridor connecting international boundaries at identified immigration entry and exit points and international terminals such as international air or sea ports."
# Class B: "A Highway that forms an important national route linking national trading or economic hubs, County Headquarters and other nationally important centers to each other and to the National Capital or to Class A roads." 
<ref name="We">{{cite web|access-date=3 April 2016|last=KeNHA |
url=http://www.kenha.co.ke/index.php?option=com_content&view=article&id=5&Itemid=13 |date=3 April 2016| title=Kenya National Highway Authority: Who We Are |publisher=Kenya National Highway Authority (KeNHA) |location=Nairobi}}</ref><ref>{{cite web|date=27 January 2016|url=http://www.standardmedia.co.ke/article/2000189489/how-kenya-national-highways-authority-plans-to-deal-with-vandalism|title=How Kenya National Highways Authority plans to deal with vandalism|location=Nairobi|
access-date=3 April 2016| newspaper=[[The Standard (Kenya)]] |first= Sophia| last=Muthoni}}</ref>

====Morocco====
{{Main|Autoroutes of Morocco}}
[[File:Voies .jpg|thumb|upright=1.1|Map of Moroccan highways and expressways]]

The motorways and expressways of [[Morocco]] are a network of multiple-lane, high-speed, controlled-access highways.

As of November 2016 the total length of Morocco's motorways was {{cvt|1,808|km|mi}} and {{cvt|1,093|km|mi}} expressways. Morocco plans to expand the road network. In the country {{cvt|3,400|km|mi}} of motorways and {{cvt|2,100|km|mi}} of expressways are currently under construction in different parts of the country.

In the year 2035 the total length of the motorways will be {{cvt|5,185|km|mi}} of motorways and {{cvt|3,700|km|mi}} of expressways. According to the minister of Morocco, this plan also includes a program specific to rural roads for the construction of {{cvt|30,000|km|mi}} of roads for an investment of 30&nbsp;billion dirhams.

<gallery mode="packed" heights="150px">
File:A1 Rabat.jpg|The first expressway in Morocco - [[Casablanca–Rabat expressway|A1 Casablanca–Rabat]]
File:A3 Rabat-Casa tollstation.jpg|Toll station at [[Bouznika]]
File:A7 motorway in Morocco 2.JPG|[[Casablanca–Agadir expressway|A3 Casablanca–Agadir]]
</gallery>

====Mozambique====
{{main|Transport in Mozambique}}

[[Mozambique]]'s highways are classified as a national or primary road (''estrada nacional'' or ''estrada primária''), or as regional – secondary or tertiary – roads (''estradas secundárias'' and ''estradas terciárias''). National roads are given the prefix "N" or "EN" followed by a one- or two-digit number. The numbers generally increase from the south of the country to the north. Regional roads are given the prefix "R", followed by a three-digit number. Mozambique has over {{convert|32000|km}} of paved roads.

====Nigeria====
{{main|Transport in Nigeria}}

[[Nigeria]] has the largest highway network in [[West Africa]]. Although much of the highways are poorly maintained, the Federal Roads Maintenance Agency has drastically improved them. Due to Nigeria's strategic location, four routes of the [[Trans-African Highway network]] are situated in the country: the [[Trans-Sahara Highway]] to Algeria; the [[Trans-Sahelian Highway]] to [[Dakar]], Senegal; the [[Trans–West African Coastal Highway]]; and the [[Lagos–Mombasa Highway]].

====South Africa====
{{Main|National routes (South Africa)}}
[[File:SA road N1.svg|50px|left]]
[[File:Map of the National Roads of South Africa with labels.svg|thumb|upright=1.1|Map of National Routes]]

In [[South Africa]], the term ''freeway'' differs from most other parts of the world. A freeway is a road where certain restrictions apply.<ref>{{Cite web|url=https://www.transport.gov.za/|archiveurl=https://web.archive.org/web/20110617110827/http://www.transport.gov.za/library/legislation/road%20traffic%20act.txt|url-status=dead|title=Home - Department-of-Transport|archivedate=17 June 2011|website=www.transport.gov.za}}</ref>

The following are forbidden from using a freeway:

* a vehicle drawn by an animal;
* a pedal cycle (such as a bicycle);
* a motorcycle having an engine with a cylinder capacity not exceeding 50&nbsp;cm<sup>3</sup> or that is propelled by electrical power;
* a motor tricycle or motor quadricycle;
* pedestrians

Drivers may not use hand signals on a freeway (except in emergencies) and the minimum speed on a freeway is {{cvt|60|km/h|mph}}. Drivers in the rightmost lane of multi-carriageway freeways must move to the left if a faster vehicle approaches from behind to overtake.

Despite popular opinion that "freeway" means a road with at least two carriageways, single carriageway freeways exist, as is evidenced by the statement that "[South Africa's] roads include {{cvt|1,400|km|mi}} of dual carriageway freeway, {{cvt|440|km|mi}} of single carriageway freeway and {{cvt|5,300|km|mi}} of single carriage main road with unlimited access."<ref>{{cite web |title = Transportation: Roads |publisher = South Africa: Stats and Facts |url = http://www.moving2southafrica.org/facts-and-stats/transportation.html |access-date = 15 June 2010 |url-status = live |archive-url = https://web.archive.org/web/20110727094706/http://www.moving2southafrica.org/facts-and-stats/transportation.html |archive-date = 27 July 2011 |df = dmy-all }}</ref>

===Americas===
[[File:PanAmericanHwy.png|thumb|upright=1.15|PanAmerican Highway]]

====Argentina====
{{main|List of highways in Argentina}}

Argentina has a national route system. It is connected to the [[Pan-American Highway]]. Argentina has a total of over {{Convert|82000|km|mi|abbr=on}} of paved roads.<ref>{{Cite web |title=Argentina |url=https://latinamericatransportationecology.org/countries/argentina/ |access-date=2024-01-13 |website=Latin America and Caribbean Transport Working Group |language=}}</ref>

====Brazil====
{{Main|Brazilian Highway System}}
[[File:BR-010 jct.svg|left|50px]]

Few highways in Brazil prohibit cyclists or pedestrians and are built according to the motorway standards defined by the [[Vienna Convention on Road Traffic]],<ref>{{cite journal |last=Silva Junior |first=Silvio Barbosa da |date=June 2019 |location=Rio de Janeiro |editor-last=Woischnik |editor-first=Jan |title=Proposta para uma rede brasileira de autoestradas |url=https://www.kas.de/documents/265553/265602/KA%2BCad%2B2019.2.pdf |trans-title=Proposal for a Brazilian motorway network |journal=Cadernos Adenauer |trans-journal=Adenauer Journals |language=Portuguese |volume=2019 |issue=2 |publisher=[[Konrad Adenauer Foundation]] |pages=29–46 |isbn=978-85-7504-228-1 |archive-url=https://web.archive.org/web/20240901132414/https://www.kas.de/documents/265553/265602/KA+Cad+2019.2.pdf |archive-date=1 September 2024 |url-status=live |access-date=3 April 2025}}</ref> ratified by Brazil in 1980.<ref>{{cite web |title=Convention on Road Traffic |url=https://treaties.un.org/Pages/ViewDetailsIII.aspx?src=TREATY&mtdsg_no=XI-B-19&chapter=11&Temp=mtdsg3&clang=_en |publisher=United Nations Treaty Collection |access-date=4 April 2025}}</ref> There is no distinct designation for controlled-access highways in the [[Brazilian Highway System|Brazilian federal and state highway systems]]. The term ''autoestrada'' (Portuguese for "motorway" or "freeway") is not commonly used in Brazil; the terms ''estrada'' ("road") and especially ''rodovia'' ("highway") are instead preferred, though neither refers specifically to motorways. Nevertheless, the most technically advanced motorways in Brazil are defined ''Class 0 expressways'' by the National Department of Transport Infrastructure (DNIT). These expressways are built to safely allow for vehicular speeds of up to {{cvt|130|km/h|mph}}. In mountainous terrain, the maximum allowable gradient is 5%, and the minimum allowable radius of curvature is {{cvt|665|m|ft}} (with 12% super-elevation).

[[Highway system of São Paulo|São Paulo]] state has the most motorways in the country. It is also the state with more highways conceded to the private sector.

Brazil's first expressway, the [[Rodovia Anhanguera]] in São Paulo state, was completed in 1953 as an upgrade of the earlier undivided highway. That same year, construction of the second highway, [[Rodovia Anchieta]], between São Paulo and the Atlantic coast, began. Expressway construction, most of them upgrades of older undivided highways, quickened in the following decades. The current Class 0 expressways include: [[Rodovia dos Bandeirantes]], [[Rodovia dos Imigrantes]], [[Rodovia Castelo Branco]], [[Rodovia Ayrton Senna|Rodovia Ayrton Senna/Carvalho Pinto]], [[Rodovia Osvaldo Aranha]] (also known as "Free-way") and São Paulo's Metropolitan Beltway [[Rodoanel Mário Covas]] – all modern, post-1970s highways meeting modern European standards. Other stretches of highway such as the under-construction south BR-101 and [[Rodovia Régis Bittencourt]] are of older design standards.

<gallery mode="packed" heights="150px">
File:Billings_2008051702.jpg|[[Rodovia dos Imigrantes]], [[São Paulo]]
File:Ponte Rio-Niteroi01 2005-03-15.jpg|The [[Rio–Niterói Bridge]], officially part of the federal [[BR-101]] highway; a landmark of [[Rio de Janeiro]]
File:BR116 Viaduto em Fortaleza.jpg|BR-116 in [[Ceará]]
</gallery>

====British overseas territories====
[[File:Leeward_Highway_1.jpg|thumb|Leeward Highway, [[Turks and Caicos Islands]], UK]]

A number of the [[United Kingdom]]'s [[BOTs|overseas territories]] have controlled-access highways, including the [[Turks and Caicos Islands]] and [[Cayman Islands]].

====Canada====
{{Main|Numbered highways in Canada|List of controlled-access highways in Ontario}}
[[File:BC-1 (TCH).svg|left|50px]]

[[Canada]] has no current national system for controlled-access highways. All controlled-access freeways, including sections that form part of the [[Trans-Canada Highway]], are under provincial jurisdiction, and have no numeric continuation across provincial boundaries. The largest networks in the country are in [[Ontario]] ([[400-series highways]]) and [[Quebec]] ([[Autoroutes of Quebec|Autoroutes]]). Speed limits are not federally set, since provincial governments set speed limits for their respective regions. These roads are influenced by, and have influenced, US standards, but have design innovations and differences. The total length of dual-carriageways with controlled access in Canada is {{cvt|6,350|km|mi}}, of which {{cvt|564|km|mi}} are in [[British Columbia]], {{cvt|642|km|mi}} in [[Alberta]], {{cvt|59|km|mi}} in [[Saskatchewan]], {{cvt|2,135|km|mi}} in Ontario, {{cvt|1,941|km|mi}} in Quebec, and {{cvt|1,000|km|mi}} in the [[Maritimes]].

====El Salvador====
{{Main|Transport in El Salvador}}

The [[RN-21 (Boulevard Diego Holguin)|RN-21]] (East–West, Boulevard Monseñor Romero), is the very first freeway to be built in [[El Salvador]] and in [[Central America]]. The freeway passes the northern area of the city of [[Santa Tecla, El Salvador|Santa Tecla]], La Libertad. It has a small portion serving [[Antiguo Cuscatlán]], La Libertad, and merges with the [[RN-5 (Autopista Comalapa)|RN-5]] (East–West, Boulevard de Los Proceres/Autopista del Aeropuerto) in [[San Salvador]]. The total length of the RN-21 is {{cvt|9.35|km}} and is currently working as a traffic reliever in the metropolitan area. Although the RN-21 was to be named in honour of the first mayor of San Salvador, [[Diego de Holguín]], due to political reasons it was renamed Boulevard Monseñor Romero, in honour of [[Óscar Romero]]. The first phase of the highway was completed in 2009, and the second phase was completed and opened in November 2012.

====Mexico====
{{Main|Mexican Federal Highway}}
[[File:Carretera_federal_1.svg|left|50px]]
[[File:Map of Mexican Autopista Network.png|thumb|upright=1.3|Map of Mexican autopista network]]

In [[Mexico]], federal highways ({{langx|es|'''Carretera Federal'''}}) are a series of highways that connect with roads from foreign countries or that link two or more states of the Federation.

<gallery mode="packed" heights="150px">
File:Mezcala_Bridge_-_Mexico_edit2.jpg|[[Mezcala Bridge]] on [[Mexican Federal Highway 95|Highway 95]] in Mexico
File:Ejido Tehuantepec Santa Rosa.jpg|Tehuantepec, [[Baja California]]
File:Jct Mex-1 San Ignacio BCS.jpg|Mexican Federal Highway 1 Junction in [[San Ignacio, Baja California Sur]]
File:Mexico-2 eastbound near Altar, Sonora.jpg|Eastbound Fed. 2 just outside [[Altar, Sonora]], after a summer rain
</gallery>

====United States====
{{Main|Interstate Highway System}}
[[File:I-0.svg|left|50px]]
[[File:Map of current Interstates.svg|thumb|upright=1.3|Interstate Highway System in the contiguous United States
{{Legend|yellow|One-digit interstates}}
{{Legend|red|Two-digit interstates}}
{{Legend|blue|Selected three-digit interstates}}
{{Legend|green|Selected planned interstates}}]]

In the [[United States]], a ''freeway'' is defined by the US government's ''[[Manual on Uniform Traffic Control Devices]]'' as a divided highway with full control of access.<ref>{{cite book |chapter = Section 1A.13 |at = para. 29 |title = Manual on Uniform Traffic Control Devices |edition = Rev 1, 2003 |chapter-url = https://mutcd.fhwa.dot.gov/HTM/2003r1/part1/part1a.htm |publisher = Federal Highway Administration |url-status = live |archive-url = https://web.archive.org/web/20060513193953/http://mutcd.fhwa.dot.gov/HTM/2003r1/part1/part1a.htm |archive-date = 13 May 2006 |df = dmy-all |title-link = Manual on Uniform Traffic Control Devices }} See also 23 CFR 750.153(k).</ref> This means two things: first, adjoining property owners do not have a legal right of access,<ref>This part of the word's meaning was codified in 1939 at Section 23.5 of the California Streets and Highways Code.{{cite web |url = http://caselaw.lp.findlaw.com/cacodes/shc/1-36.html |title = California Code |access-date = 2011-05-30 |url-status = live |archive-url = https://web.archive.org/web/20090727053559/http://caselaw.lp.findlaw.com/cacodes/shc/1-36.html |archive-date = 27 July 2009 |df = dmy-all }} See also ''People v. Scheinman'', 248 Cal. App. 2d 180, 182, 56 Cal. Rptr. 168, 168–169 (1967) (interpreting Section 23.5 to find that a property owner had deeded to the State just the access from the side of his property directly abutting a future freeway but not the access through a connecting road that the state wished to close in order to upgrade an expressway to a freeway).</ref> meaning all existing driveways must be removed and access to adjacent private lands must be blocked with fences or walls; instead, [[frontage road]]s provide access to properties adjacent to a freeway in many places.

Second, traffic on a freeway is "free-flowing". All cross-traffic (and left-turning traffic) is relegated to overpasses or underpasses, so that there are no traffic conflicts on the main line of the highway, which must be regulated by traffic lights, stop signs, or other traffic control devices. Achieving such free flow requires the construction of many overpasses, underpasses, and ramp systems. The advantage of grade-separated interchanges is that freeway drivers can almost always maintain their speed at junctions since they do not need to yield to vehicles crossing perpendicular to mainline traffic.

In contrast, an [[Limited-access road|expressway]] is defined as a divided highway with partial control of access.<ref>{{cite book |chapter = Section 1A.13 |at = para. 27 |title = Manual on Uniform Traffic Control Devices |edition = Rev. 1, 2003 |chapter-url = https://mutcd.fhwa.dot.gov/HTM/2003r1/part1/part1a.htm |url-status = live |archive-url = https://web.archive.org/web/20060513193953/http://mutcd.fhwa.dot.gov/HTM/2003r1/part1/part1a.htm |archive-date = 13 May 2006 |df = dmy-all }}</ref> Expressways may have driveways and at-grade intersections, though these are usually less numerous than on ordinary arterial roads.

This distinction was first developed in 1949 by the Special Committee on Nomenclature of what is now the [[American Association of State Highway and Transportation Officials]].<ref>{{cite book |title = AASHO Highway Definitions |location = Washington DC |publisher = American Association of State Highway Officials |year = 1962 |pages = 1–3 }}</ref> Prior to that distinction the first freeways were complete in 1940, the [[Pennsylvania Turnpike]] and the [[Arroyo Seco Parkway]] (Pasadena Freeway).<ref>{{cite book |first1 = Karl B. |last1 = Raitz |first2 = George F. |last2 = Thompson |title = The National Road |url = https://books.google.com/books?id=_XSoga0PSd0C&pg=PA34 |year = 1996 |publisher = JHU Press |isbn = 978-0-8018-5155-1 |pages = 34– }}<br />{{cite book |first1 = Craig |last1 = Taylor |first2 = Elliott |last2 = Mittler |first3 = Le Val |last3 = Lund |title = Overcoming Barriers: Lifeline Seismic Improvement Programs |url = https://books.google.com/books?id=rI-yT5GydjgC&pg=PA174 |year = 1998 |publisher = ASCE Publications |isbn = 978-0-7844-7460-0 |pages = 173–174 }}<br />{{cite book |first = Carlos A. |last = Schwantes |title = Going Places: Transportation Redefines the Twentieth-Century West |url = https://books.google.com/books?id=QOIZQyNtfKkC&pg=PA273 |year = 2003 |publisher = Indiana University Press |isbn = 978-0-253-34202-7 |pages = 272–273 }}</ref>

In turn, the definitions were incorporated into AASHTO's official standards book, the ''Manual on Uniform Traffic Control Devices'', which would become the national standards book of USDOT under a 1966 federal statute. The same distinction has also been codified into the statutory law of eight states: [[California]],<ref>California Streets & Highways Code § 257.</ref> [[Minnesota]],<ref>{{cite book |title = Minnesota Statutes |chapter = § 160.02, subds. 18b & 19 }}</ref> [[Mississippi]],<ref>{{cite book |title = Mississippi Code Annotated |chapter = § 65-5-3, subds. (b) and (c) }}</ref> [[Missouri]],<ref>{{cite book |title = Missouri Revised Statutes |chapter = § 304.010 }}</ref> [[Nebraska]],<ref>{{cite book |title = Nebraska Revised Statutes |chapter = §§ 60-618.01 and 60-621 }}</ref> [[North Dakota]],<ref>{{cite book |title = North Dakota Century Code |chapter = § 24-01-01.1 |year = 2006 }}</ref> [[Ohio]],<ref>{{cite book |chapter-url = http://codes.ohio.gov/orc/4511.01 |title = Ohio Revised Code Annotated |chapter = § 4511.01, subds. (YY) and (ZZ) |access-date = 4 October 2014 |url-status = live |archive-url = https://web.archive.org/web/20141006105325/http://codes.ohio.gov/orc/4511.01 |archive-date = 6 October 2014 |df = dmy-all }}</ref> and [[Wisconsin]].<ref>{{cite book |title = Wisconsin Statutes |chapter = §§ 59.84(1)(b) and 346.57(1)(am) }}</ref>

However, each state codified the federal distinction slightly differently. [[California]] expressways do not necessarily have to be divided, though they must have at least partial access control. For both terms to apply, in [[Wisconsin]], a divided highway must be at least four lanes wide; and in [[Missouri]], both terms apply only to divided highways at least {{cvt|10|mi|km|order=flip}} long that are not part of the Interstate Highway System. In [[North Dakota]] and [[Mississippi]], expressways may have "full or partial" access control and "generally" have grade separations at intersections; a freeway is then defined as an expressway with full access control. Ohio's statute is similar, but instead of the vague word "generally", it imposes a requirement that 50% of an expressway's intersections must be grade-separated for the term to apply.<ref>{{cite book |chapter-url = http://codes.ohio.gov/orc/4511.01 |title = Ohio Revised Code Annotated |chapter = § 4511.01, subd. (ZZ) |access-date = 4 October 2014 |url-status = live |archive-url = https://web.archive.org/web/20141006105325/http://codes.ohio.gov/orc/4511.01 |archive-date = 6 October 2014 |df = dmy-all }}</ref> Only [[Minnesota]] enacted the exact MUTCD definitions, in May 2008.

The term "expressway" is also used in some areas of the country for what the federal government calls "freeways".<ref name="ahd">{{cite web |title = freeway |url = http://www.bartleby.com/61/33/F0313300.html |work = American Heritage Dictionary |via = bartleby.com |url-status = dead |archive-url = https://web.archive.org/web/20080824212711/http://www.bartleby.com/61/33/F0313300.html |archive-date = 24 August 2008 |df = dmy-all }}</ref> Where the terms are distinguished, freeways can be characterized as expressways upgraded to full access control, while not all expressways are freeways.

Examples in the United States of roads that are technically expressways (under the federal definition), but contain the word "freeway" in their names: [[K-96 (Kansas highway)|State Fair Freeway]] in [[Kansas]], [[Chino Valley Freeway]] in California, [[Rockaway Freeway]] in [[New York (state)|New York]], and Shenango Valley Freeway (a portion of [[U.S. Route 62 in Pennsylvania|US&nbsp;62]]) in [[Pennsylvania]].

Unlike in some jurisdictions, not all freeways in the US are part of a single national freeway network (although together with non-freeways, they form the [[National Highway System (United States)|National Highway System]]). For example, many state highways such as [[California State Route 99]] have significant freeway sections. Many sections of the older [[United States Numbered Highway System]] have been upgraded to freeways but have kept their existing US Highway numbers.{{Citation needed|date=December 2013}}

In [[Puerto Rico]], controlled access highways are named ''autopista''.<ref>{{cite web | url=https://www.abertis.com/en/the-group/toll-roads/puerto-rico | title=Puerto Rico toll roads - Toll roads - the Group - Abertis }}</ref> Autopistas are tolled roads in the island, but toll cabins do exist on other types of roads as well. One of the best known autopistas in Puerto Rico is the [[Autopista Luis A. Ferré]] (Luis A. Ferré Expressway), which goes from [[San Juan, Puerto Rico|San Juan]], the capital to the north, to [[Ponce, Puerto Rico|Ponce]], the island's second largest city, to the south.

<gallery mode="packed" heights="150px">
File:45intoI-10 2.jpg|I-45 and I-10/US&nbsp;90 next to [[Downtown Houston]]
File:I-5 north approaching I-10 east split- long view.jpg|[[Interstate 5]] (I-5) in [[Los Angeles]]
File:I70 at San Rafael swell-Green River.jpg|I-70 passes through Spotted Wolf Canyon at the eastern edge of the [[San Rafael Swell]].
File:I-90 floating bridges looking east.JPG|I-90 crossing [[Lake Washington]]
File:I-25 southbound at Big I.jpg|At the [[Big I]] in [[Albuquerque, New Mexico]]
File:Interstate_15,_Las_Vegas,_South_of_Flight_Path_on_Departure_(14203692275).jpg|Aerial view of I-15 looking south from Sunset Road in the [[Las Vegas Valley]]
File:McClure Tunnel west.jpg|Western end of I-10 at the [[McClure Tunnel]] in [[Santa Monica]]
File:I91_Connecticut.jpg|[[Interstate 91]] with [[HOV lane]]s north of [[Hartford, Connecticut]]
</gallery>
{{clear}}

===Asia===
[[File:Asian Highways.png|thumb|upright=1.1|Asian highways]]
[[File:E-roads-Caucasus-countries.png|thumb|Highways of the [[Caucasus]]]]

====Afghanistan====
[[File:Afghanistan-Iran border in Zaranj, Afghanistan, 2011.jpg|thumb|The [[Delaram-Zaranj Highway]] at the Iran-Afghanistan border]]

Many highways of Afghanistan were built in the 1960s with American and Soviet assistance. The Soviets built a road and tunnel through the Salang pass in 1964, connecting northern and eastern Afghanistan. A highway connecting the principal cities of Herat, Kandahar, Ghazni, and Kabul with links to highways in neighbouring Pakistan formed the primary highway. The historical [[Highway 1 (Afghanistan)|Highway 1]] currently connects the major cities. Afghanistan has over {{Cvt|42,000|km|mi}} of roads, with {{Convert|12000|km|mi|abbr=on}} being paved. The highway infrastructure is currently going through reconstruction and can often be risky due to the instability of the country.

====Armenia====
Armenia has about {{cvt|8,140|km|mi}} of paved roads, of which 96% are asphalted. Armenia is connected to Europe through the [[International E-road network]] and Asia through the [[Asian Highway Network]]. Armenia is a member of the International Road Transport Union and the TIR Convention.

====Azerbaijan====
{{main|Roads in Azerbaijan|Transport in Azerbaijan}}

Azerbaijan has about {{cvt|29,000|km|mi}} of paved roads; the first paved roads were built during the Russian Empire. The road network, from rural roads to motorways, is today undergoing a rapid modernization with rehabilitations and extensions. For every {{cvt|1000|km2}} of national territory, there are {{cvt|334|km}} of roads. Azerbaijan is connected to Europe through the 
[[International E-road network]] and Asia through the [[Asian Highway Network]].

====China====
{{Main|Expressways of China|China National Highways}}
[[File:China Expwy G1 sign no name.svg|50px|left]]
[[File:China National Expressway Network light.svg|thumb|Map of the [[Expressways of China|National Expressway Network of China]]]]

The expressway network of China, with the national-level expressway system officially known as the '''National Trunk Highway System''' ({{lang-zh|s=中国国家干线公路系统|t=|p=Zhōngguó Guójiā Gànxiàn Gōnglù Xìtǒng|c=}}; abbreviated as '''NTHS'''), is an integrated system of national and provincial-level expressways in [[China]].<ref name="journal of transport">Li, Si-ming and Shum, Yi-man. [http://nexus.umn.edu/Courses/ce5212/Case4/articles/Journal%20of%20Transport%20Geography,%20vol.%209%20(2001).pdf Impacts of the National Trunk Highway System on accessibility in China] {{Webarchive|url=https://web.archive.org/web/20100622005459/http://nexus.umn.edu/Courses/ce5212/Case4/articles/Journal%20of%20Transport%20Geography,%20vol.%209%20(2001).pdf |date=22 June 2010 }}. ''Journal of Transport Geography''.</ref><ref name="7918wang">[http://news.xinhuanet.com/video/2005-01/13/content_2453969.htm 国家高速公路网规划 (National Trunk Highway System Planning)] {{webarchive|url=https://web.archive.org/web/20140114220201/http://news.xinhuanet.com/video/2005-01/13/content_2453969.htm |date=2014-01-14 }}. 13 January 2005. {{in lang|zh}}</ref>

By the end of 2019, the total length of China's expressway network reached {{cvt|149,600|km|mi}},<ref>{{cite web|url=http://www.xinhuanet.com/fortune/2018-12/28/c_1123919672.htm|archive-url=https://web.archive.org/web/20190106204350/http://www.xinhuanet.com/fortune/2018-12/28/c_1123919672.htm|url-status=dead|archive-date=6 January 2019|title=去年交通固定资产投资超3万亿 高速公路里程13.65万公里|publisher=人民网|date=March 30, 2018}}</ref> the world's largest expressway system by length, having surpassed the overall length of the American [[Interstate Highway System]] in 2011.<ref name="我国高速公路通车里程位居世界第一 骨架网络正加快贯通">{{cite news|url=http://www.nbd.com.cn/articles/2017-07-16/1128352.html|title=我国高速公路通车里程位居世界第一 骨架网络正加快贯通|publisher=第一财经日报|access-date=7 December 2019|archive-date=3 May 2019|archive-url=https://web.archive.org/web/20190503064804/http://www.nbd.com.cn/articles/2017-07-16/1128352.html|url-status=dead}}</ref> Planned length is {{cvt|168,478|km|mi}} by 2020.<ref name="我国高速公路通车里程位居世界第一 骨架网络正加快贯通"/>

Expressways in China are a fairly recent addition to a complicated network of roads. According to Chinese government sources, China did not have any expressways before 1988.<ref>{{cite news |url = https://www.usatoday.com/news/world/2006-01-29-china-roads_x.htm |work = USA Today |title = China's Highways Go the Distance |first1 = Calum |last1 = MacLeod |date = 29 January 2006 |access-date = 2 May 2010 |url-status = live |archive-url = https://web.archive.org/web/20101005052252/http://www.usatoday.com/news/world/2006-01-29-china-roads_x.htm |archive-date = 5 October 2010 |df = dmy-all }}</ref> One of the earliest expressways nationwide was the [[Jingshi Expressway]] between [[Beijing]] and [[Shijiazhuang]] in [[Hebei]] province. This expressway now forms part of the [[Jingzhu Expressway]], currently one of the longest expressways nationwide at over {{cvt|2,000|km|mi}}.

<gallery mode="packed" heights="150">
File:Jiangyin Yangtze River bridge-2.jpeg|The expressway crosses the [[Yangtze River]] over the [[Jiangyin Suspension Bridge]]
File:PRC Expressway.jpg|G106, [[Jingkai Expressway]] section in southern [[Beijing]]
File:G6 expressway from offramp to North Fifth Ring Road, Beijing.jpg|[[G1 Expressway (China)|G6]] expressway at the interchange with the [[Fifth Ring Road]] in northern Beijing
File:DFTianjinFwySignWP.jpg|Signs using the new numbering system as seen on China National Expressway 1 in Tianjin
</gallery>

====Georgia====
{{main|Roads in Georgia (country)|Transport in Georgia (country)}}
[[File:E Road in GEO.svg|thumb|National roads in Georgia]]

The road network in [[Georgia (country)|Georgia]] consists of {{cvt|1,595|km|mi}} of main or international highways in good condition, of which by 2021 roughly {{convert|230|km|mi}} are controlled-access highway, while further expansion is ongoing. The {{convert|7000|km|mi}} of domestic main roads are of mixed quality, although the conditions are improving. Some {{convert|12400|km|mi}} of local roads are generally in poor condition. Georgia is connected to Europe via the [[International E-road network]] and Asia through the [[Asian Highway Network]].

====Hong Kong====
{{main|Hong Kong Strategic Route and Exit Number System}}
[[File:Hong Kong road sign (Expressway Begins).svg|left|50px]]
[[File:HK Route1.svg|50px|left]]

In Hong Kong major motorways are numbered from 1 to 10 in addition to their names. Speed limits on expressways typically range from {{cvt|70|to|110|km/h|mph}}.

<gallery mode="packed" heights="150px">
File:North Lantau Highway 2016.jpg|[[North Lantau Highway]] on Lantau Island
File:Tolo Highway at night (Street Light rays improved).jpg|[[Tolo Highway]] in Ma Liu Shui
File:Fanling Highway Sheung Shui Section.jpg|[[Fanling Highway]] in Sheung Shui
File:Tsing Ma Bridge 2008.jpg|North West Tsing Yi Interchange near [[Tsing Ma Bridge]] ([[Lantau Link]])
</gallery>

====India====
{{Main|Expressways in India}}
[[File:NE1-IN.svg|50px|left]]

Expressways (known as "Gatimarg/गतिमार्ग", or "Speedways" in [[Hindi]] and other Indian languages) are the highest class of roads in India's road network and currently make up around {{cvt|45,890|km|mi}} of the [[National Highway (India)|National Highway System]], with additional {{cvt|21,637|km|mi}} under various phases of implementation. They have a minimum of six or eight-lane controlled-access highways where entrance and exit is controlled by the use of [[slip road]]s. The expressways are operated and maintained by the [[Government of India|Union]], through the [[National Highways Authority of India]].

<gallery mode="packed" heights="150px">
File:Delhi-Gurgaon_Airport_Expressway,_2007.jpg|Section of the [[Delhi Gurgaon Expressway]]
File:Express highway.jpg|The [[Mumbai-Pune Expressway]]
File:Delhi–Meerut Expressway.jpg|The [[Delhi-Meerut Expressway]]
File:Noida expressway.jpg|A section of [[Noida–Greater Noida Expressway]]
</gallery>

====Indonesia====
{{Main|List of toll roads in Indonesia}}
[[File:ID Rambu petunjuk 4a.svg|left|50px]]
[[File:Bali Mandara Toll road.JPG|thumb|The [[Bali Mandara Toll Road]], in [[Bali]], Indonesia]]
[[File:ID Tol12-1.svg|left|50px]]

In Indonesia all expressways ({{langx|id|Jalan Bebas Hambatan}}, "obstacle-free road") are tolled, so they are better known as [[toll road]] (''Jalan Tol''). Indonesia has {{cvt|1,710|km|mi}} expressway length so far, almost 70% of its expressways are in Java island.

In 2009, the Indonesian government had planned to expand more expressway network in Java island by connecting [[Port of Merak|Merak]] to [[Banyuwangi]] which is the total length of Trans-Java toll road including large cities expressway in Java such as [[Jakarta]], [[Surabaya]], [[Bandung]] and its complements is more than {{cvt|1,000|km|mi}}.
The Indonesian government also had planned to build the Trans-Sumatra toll road which connects [[Banda Aceh]] to [[Port of Bakauheni|Bakauheni]] spanning {{cvt|2,700|km|mi}}. In 2012, the government allocated 150&nbsp;trillion rupiah for the construction of the toll roads. There are three stages of construction of Trans-Sumatra toll road which is expected to be connected together in 2025.<ref>{{cite web |url = http://infopublik.kominfo.go.id/index.php?page%3Dnews%26newsid%3D15929 |title = Portal Berita Info Publik - Kementerian Komunikasi dan Informatika |access-date = 13 October 2015 |url-status = dead |archive-url = https://web.archive.org/web/20151222102002/http://infopublik.kominfo.go.id/index.php?page=news&newsid=15929 |archive-date = 22 December 2015 }}</ref>

The other islands in Indonesia such as [[Borneo|Kalimantan]], [[Sulawesi]] also has begun constructed its expressways including connecting [[Manado]] to [[Makassar]] in Sulawesi and also [[Pontianak, Indonesia|Pontianak]] to [[Balikpapan]] in Kalimantan.<ref>{{cite news |url = http://www.antaranews.com/en/news/81533/manado-people-ask-govt-accelerate-trans-sulawesi |title = Manado people ask govt accelerate Trans Sulawesi |work = Antaranews.com |date = 22 April 2012 |access-date = 5 September 2016 |url-status = live |archive-url = https://web.archive.org/web/20161129192226/http://www.antaranews.com/en/news/81533/manado-people-ask-govt-accelerate-trans-sulawesi |archive-date = 29 November 2016 }}</ref> However, there are still no plans to build an expressway in [[Western New Guinea]] due to its slow population growth. Indonesia is expected to have at least {{cvt|7,000|km|mi}} of expressway in 2030.

====Iran====
{{Main|Freeways in Iran}}
[[File:Freeway in Iran.svg|left|50px]]
[[File:Tehran-Karaj Freeway, Apadana, آزادراه تهران-کرج، دی86 - panoramio.jpg|thumb|Tehran-Karaj highway]]

The history of [[freeways in Iran]] goes back to before the [[Iranian Revolution]]. The first freeway in Iran was built at that time, between Tehran and Karaj with additional construction and the studies of many other freeways started as well. Today Iran has about {{cvt|2,160|km|mi}} of freeway.

====Iraq====
{{main|Transport in Iraq}}
[[File:Erbil mosul highway.png|thumb|Highway between [[Erbil]] and [[Mosul]]]]

Iraq's network of highways connects it from the inside to adjacent countries such as [[Syria]], [[Turkey]], [[Kuwait]], [[Saudi Arabia]], [[Jordan]] and [[Iran]]. When [[Saddam Hussein]] visited the United States, he was impressed at the highway style and ordered the highways to be built in American form. [[Freeway 1 (Iraq)|Freeway 1]] is the longest freeway in the country, connecting from [[Umm Qasr Port]] in [[Basra]] to [[Ar Rutba]] in [[Al Anbar Governorate|Anbar]], spreading to a new freeway connecting it to Syria and Jordan. Iraq has about {{cvt|45,550|km}} of highways, with {{cvt|38,400|km}} of them paved.

====Israel====
{{Main|List of highways in Israel}}
[[File:ISR-FW-1.svg|left|50px]]
[[File:Rischon031.jpg|thumb|Highway 431 near [[Rishon LeZion]]]]
[[File:Littleuni_13.jpg|thumb|upright=1.1| Ayalon Highway near Rokach Interchange]]

Controlled-access highways in Israel are designated by a blue colour. Blue highways are completely grade-separated but may include bus stops and other elements that may slow down traffic on the right lane. [[Highway 6 (Israel)|Highway 6]] is Israel's longest freeway. It will extend to {{Convert|260|km|mi|abbr=on}} in length, from [[Shlomi (town)|Shlomi]] in the north to the Negev Junction in the south.<ref>{{cite web |url=https://www.gov.il/en/departments/general/project-road-6 |title=Highway_6_MinistryOfFinance |last=MinistryOfFinance |first=MinistryOfFinance |date= September 11, 2020 |website=Ministry Of Finance |access-date= December 29, 2020}}</ref>

====Japan====
{{Main|Expressways of Japan}}
[[File:JP Expressway E1.svg|50px|left]]
[[File:Japan National Expressway map.png|thumb|upright=0.9|Map of Japanese expressways with numbering scheme]]
[[File:Shuto Urban Expwy Sign B.svg|50px|left]]

{{Nihongo|National expressways|高速自動車国道|Kōsoku Jidōsha Kokudō}}, generally known as {{nihongo|高速道路|Kōsoku Dōro}}, make up the majority of controlled-access highways in Japan. The network boasts an uninterrupted link between [[Aomori Prefecture]] at the northern part of [[Honshū]] and [[Kagoshima Prefecture]] at the southern part of [[Kyūshū]], linking [[Shikoku]] as well. Additional expressways serve travellers in [[Hokkaidō]] and on [[Okinawa Island]], although those are not connected to the Honshū-Kyūshū-Shikoku grid. Expressways have a combined length of {{cvt|9,429|km|mi}} {{as of|April 2018|lc=yes}}.<ref>{{cite web |url = http://www.mlit.go.jp/road/road_e/pdf/ROAD2014web.pdf |title = 2014 Roads in Japan |access-date = 20 June 2015 |url-status = dead |archive-url = https://web.archive.org/web/20150403161029/http://www.mlit.go.jp/road/road_e/pdf/ROAD2014web.pdf |archive-date = 3 April 2015 }}</ref><ref>{{cite web |url = http://www.stat.go.jp/english/data/nenkan/1431-12.htm |title = Statistics Bureau Home Page/JAPAN STATISTICAL YEARBOOK 2016 - Chapter 12 Information and Communication |website = Stat.go.jp |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525161650/http://www.stat.go.jp/english/data/nenkan/1431-12.htm |archive-date = 25 May 2017 }}</ref><ref>{{cite web |url = http://www.mlit.go.jp/road/soudan/soudan_10b_01.html |title = 道路：道の相談室：道に関する各種データ集 |website = 国土交通省 |access-date = 16 Mar 2019 }}</ref>

<gallery mode="packed" heights="150">
File:Satta yukei.jpg|Many Japanese expressways go through the steep mountains.
File:Isewangan20180428H.jpg|A group of green-coloured directional signs on a Japanese expressway
File:Tokai JCT 20150815B.JPG|Toll gates are placed at most of the entrances and exits of Japanese expressways.
File:TOYOTA Interchange on TOMEI EXPWY and SHIN-TOMEI EXPWY.jpg|Aerial view of Toyota Junction, connecting Tomei Expressway and Ise-Wangan Expressway
File:Shuto expressway takaracho.jpg|The [[Shutoko]] [[Inner Circular Route (Shuto Expressway)|C1]] route forms a loop of the center of Tokyo.
</gallery>

====Lebanon====
Lebanon has an extensive network of highways that are in varying condition throughout the country. Many highways are part of the [[Arab Mashreq International Road Network]]. Some highways have been upgraded to four-lane motorways, including the Beirut–Tripoli highway.

====Malaysia====
{{Main|Malaysian Expressway System}}
[[File:Expressway logo.png|50px|left]]
[[File:Sungailong-kdle.JPG|thumb|Sungai Long exit, [[Kajang Dispersal Link Expressway]], [[Selangor]] Malaysia]]
[[File:Mes-e1.svg|left|50px]]

Controlled-access highways in Malaysia are known as {{em|expressways}} ({{langx|ms-MY|lebuhraya}} – this is also the name for [[Limited-access road|highways]]). However, some expressways, particularly bridges and tunnels such as the [[Penang Bridge]], do not formally use the ''expressway'' name; a small number confusingly use the term ''highway'', which is normally the designation for [[limited-access road]]s. [[Route number]]s of designated expressways begin with the letter E. All expressways (excluding a section of the [[South Klang Valley Expressway]], which is a [[two-lane expressway]]) are built with [[dual carriageway]]s and at least two lanes in each direction; urban expressways generally have three or more lanes in each direction.

While all expressways are [[grade separation|grade separated]] at major roadways, many urban expressways in the [[Greater Kuala Lumpur]] region often have at-grade intersections, including with residential roads and shopfronts, thus do not meet the strict definition of a controlled-access highway. These expressways were previously normal [[Arterial road|arterial]] or [[Collector road|collector]] roads that had such intersections, and were not removed when the roads were converted to expressways due to the resulting accessibility and sometimes political issues. Despite this, no expressway allows traffic to cross the [[median strip]] (apart from [[U-turn]]s on a limited number of expressways) and expressways do not have at-grade [[traffic signal]]s or [[roundabout]]s. Expressways have a maximum speed limit of {{cvt|110|km/h}}, while speed limits of {{cvt|90|km/h}} or lower are typical in built-up areas.

As of 2017, expressways have only been designated in [[Peninsular Malaysia]]. There are 34 fully or partially open expressways with an approximate total length of {{cvt|1,821|km|mi}}.<ref name="llm">{{cite web|url = http://www.llmnet.gov.my/serverpages/resources/faq_list.aspx |title = LLM-Senarai FAQ |access-date = 13 October 2015 |url-status = dead |archive-url = https://web.archive.org/web/20120321224459/http://www.llmnet.gov.my/serverpages/resources/faq_list.aspx |archive-date = 21 March 2012}}</ref><ref name="psklm">{{cite web|url = http://www.travelsmarter.com.my/information-on-malaysian-highways/#.VBnKF_mSz_8 |title = TravelSmarter |website = TravelSmarter.com.my |access-date = 18 July 2017 |url-status = dead |archive-url = https://web.archive.org/web/20170625121337/http://www.travelsmarter.com.my/information-on-malaysian-highways/#.VBnKF_mSz_8 |archive-date = 25 June 2017}}</ref> The vast majority of expressways are [[Toll road|tolled]]; the [[North–South Expressway (Malaysia)|North–South Expressway]] network, [[East Coast Expressway]] and [[West Coast Expressway]] predominantly use the [[ticket system]] of toll collection, while all other expressways use the [[Barrier toll system|barrier system]]. The construction and operation of expressways in Malaysia are usually privatized via [[concession agreement]]s with the [[Government of Malaysia|federal government]], using the [[build–operate–transfer]] system.

====Pakistan====
{{Main|Motorways of Pakistan|Expressways of Pakistan}}
{{More citations needed|date=August 2017}}
[[File:Pakistan motorway symbol.svg|left|50px|Symbol used for motorways in Pakistan]]
[[File:Pakistan Nationalhighways.PNG|thumb|upright=1.15|National highways of Pakistan, showing motorways and expressways]]
[[File:Pakistan M-1.svg|left|50px]]

The [[motorways of Pakistan]] and [[expressways of Pakistan]] are a network of multiple-lane, high-speed, limited-access or controlled-access highways in Pakistan, which are owned, maintained and operated federally by Pakistan's National Highway Authority. The total length of Pakistan's motorways and expressways is {{cvt|1,670|km|mi}} as of November 2016.<ref>{{Cite web|title=National Highways Authority – Committed to Excellence|url=http://nha.gov.pk/en/|access-date=2020-11-27|language=en-GB}}</ref> Around {{cvt|3,690|km|mi}} of motorways are currently under construction in different parts of the country. Most of these motorway projects will be complete between 2018 and 2020.<ref>{{Cite web|title=Peshawar-Karachi Motorway (Multan-Sukkur Section) {{!}} China-Pakistan Economic Corridor (CPEC) Official Website|url=http://cpec.gov.pk/project-details/29|access-date=2020-11-27|website=cpec.gov.pk}}</ref>

Pakistan's motorways are part of Pakistan's National Trade Corridor project that aims to link Pakistan's three [[Arabian Sea]] ports of [[Karachi]], [[Port Qasim]] and [[Gwadar]] to the rest of the country. These would further link with [[Central Asia]] and [[China]], as proposed in the [[China Pakistan Economic Corridor]].

Pakistan's first motorway, the [[M-2 motorway (Pakistan)|M-2]], was inaugurated in November 1997; it is a {{convert|367|km|mi|adj=mid|-long}}, six-lane motorway that links Pakistan's federal capital, [[Islamabad]], with [[Punjab (Pakistan)|Punjab's]] provincial capital, [[Lahore]].<ref>{{Cite web|title=Lahore-Islamabad Motorway (M-2) – National Highways Authority|url=http://nha.gov.pk/ettmmap/lahore-islamabad-motorway-m-2/|access-date=2020-11-27|language=en-GB}}</ref> It is ranked among the world's top five speed highways/motorways. Other completed motorways and expressways are M1 [[Peshawar]]–[[Islamabad]] Motorway, M4 PindiBhattian–[[Faisalabad]]-Multan Motorway, E75 Islamabad-[[Murree]]–[[Kashmir]] Expressway, M3 [[Lahore]]–[[Multan]] Motorway, M8 Ratadero–Gawader Motorway, E8 Islamabad Expressway, M5 [[Multan]]-[[Sukkur]] Motorway, M9 [[Karachi]]-[[Hyderabad, Sindh]] and few others.<ref>{{Cite web|title=Karachi- Hyderabad Motorway (M-9) – National Highways Authority|url=https://nha.gov.pk/ettmmap/karachi-hyderabad-motorway-m-9/|access-date=2020-11-27|language=en-GB}}</ref>

<gallery mode="packed" heights="150">
File:M2-Motorway.jpg|The motorway [[M-2 motorway (Pakistan)|M-2]] passes through the [[Salt Range]] mountains.
File:M1 motorway KPK.jpg|[[M-1 motorway (Pakistan)|M-1 motorway]] westbound towards Peshawar
File:M1 motorway Peshawar Toll Plaza.jpg|[[M-1 motorway (Pakistan)|M-1]] Peshawar Toll Plaza
File:Under Construction at Mansehra.jpg|[[M-15 motorway (Pakistan)|M-15]] at [[Mansehra]]
File:Makran Coastal Highway, Balochistan.jpg|The [[Makran Coastal Highway]] (N10) passing through Balochistan
</gallery>

====Philippines====
{{Main|Philippine expressway network|List of expressways in the Philippines}}
[[File:E1 (Philippines).svg|50px|left]]
[[File:Philippines expressways 2024.jpg|thumb|Map of expressways in [[Luzon]], maroon for built expressways and expressways under construction, red for proposed expressways]]

Full control-access highways in the Philippines are referred to as ''expressways'', which are usually toll roads. The expressway network is concentrated in Luzon, with the [[North Luzon Expressway]] and [[South Luzon Expressway]] being the most important ones. The expressway network in Luzon do not form an integrated network, but there are ongoing construction projects to interconnect those highways as well as to decongest the existing roads in the areas they serve. Expressways are being introduced to Visayas and Mindanao through the construction of the [[Cebu–Cordova Link Expressway]] in [[Metro Cebu]] and [[Davao City Expressway]] in [[Davao City]].

<gallery mode="packed" heights="150px">
File:View From NLEX Overpass, Bulacan, Philippines - panoramio.jpg|A portion of North Luzon Expressway in [[Guiguinto|Guiguinto, Bulacan]]
File:Pic geo photos - ph=mm=muntinlupa=slex - view from bilibid overpass -philippines--2015-0428--ls-.jpg|[[South Luzon Expressway]]
</gallery>

====Saudi Arabia====
{{main|Transport in Saudi Arabia}}
[[File:Highway60SaudiArabia.JPG|thumb|Highway 60 passing through the Hijaz Mountains]]

Highways in Saudi Arabia vary from eight-laned roads to small two-lane roads in rural areas. The city highways and other major highways are well maintained, especially the roads in the capital Riyadh. The roads have been constructed to resist the consistently high temperatures and do not reflect the strong sunshine. The other city highways such as the one linking coast to coast are not as great as the inner-city highways but the government is now working on rebuilding those roads. Saudi Arabia is part of the Arab-Mashreq Highway Network and connects to the rest of Asia through the Asian Highway Network.

====Singapore====
{{Main|Expressways of Singapore}}
[[File:Singapore Road Signs - Information Sign - Expressway.svg|50px|left]]
[[File:Bukit Timah Expressway.jpg|thumb|The [[Bukit Timah Expressway]] in [[Singapore]]]]
[[File:AYE-SG.svg|left|50px]]

The expressways of Singapore are special [[road]]s that allow motorists to travel quickly from one urban area to another. All of them are [[dual carriageway]]s with [[grade separation|grade-separated]] [[interchange (road)|access]]. They usually have three to four [[lane]]s in each direction, although there are two-lane carriageways at many expressway—expressway intersections and five-lane carriageways in some places. There are ten expressways, including the new [[Marina Coastal Expressway]]. Studies about the feasibility of additional expressways are ongoing.

Construction on the first expressway, the [[Pan Island Expressway]], started in 1966. {{As of|2014}}, there are {{cvt|163|km|mi}} of expressways in Singapore.<ref>{{cite web |url = http://www.aas.com.sg/features/archive/otr07013.htm |title = Expressways in Singapore: Did you know? |access-date = 5 April 2006 |date = July 2001 |publisher = Automobile Association of Singapore |work = The Highway |url-status = dead |archive-url = https://web.archive.org/web/20060310034138/http://www.aas.com.sg/features/archive/otr07013.htm |archive-date = 10 March 2006 }}</ref>

The Singaporean expressway networks are connected with [[Malaysian Expressway System|Malaysian expressway networks]] via [[Ayer Rajah Expressway]] (connects with the [[Second Link Expressway]] via the [[Malaysia–Singapore Second Link]]) and [[Bukit Timah Expressway]] (connects with the [[Johor Bahru Eastern Dispersal Link Expressway|Eastern Dispersal Link]] via the [[Johor–Singapore Causeway]]).

====South Korea====
{{Main|Expressways in South Korea}}
[[File:Korea Expressway No.1.svg|50px|left]]
[[File:Expressways in South Korea.svg|thumb|upright=0.9|Expressways in South Korea]]

Since [[Gyeongin Expressway]] linking [[Seoul]] and [[Incheon]] opened in 1968, national expressway system in [[South Korea]] has been expanded into 36 routes, with total length of {{cvt|4,481|km|mi}} as of 2017. Most of expressways are four-lane roads, while {{cvt|1,030|km|mi}} (26%) have six to ten lanes. Speed limit is typically {{cvt|100|km/h|mph}} for routes with four or more lanes, while some sections having fewer curves have limit of {{cvt|110|km/h|mph}}.

Expressways in South Korea were originally numbered in order of construction. Since 24 August 2001, they have been numbered in a scheme somewhat similar to that of the Interstate Highway System in the United States. Furthermore, the symbols of the South Korean highways are similar to the US red, white and blue.

* Arterial routes are designated by two-digit numbers, with north–south routes having odd numbers, and east–west routes having even numbers. Primary routes (i.e. major thoroughfares) have 5 or 0 as their last digit, while secondary routes end in other digits.
* Branch routes have three-digit route numbers, where the first two digits match the route number of an arterial route. This differs from the American system, whose last two digits match the primary route.
* Belt lines have three-digit route numbers where the first digit matches the respective city's postal code. This also differs from American numbering.
* Route numbers in the range 70–99 are not used in South Korea; they are reserved for designations in the event of [[Korean reunification]].
* The Gyeongbu Expressway kept its Route 1 designation, as it is South Korea's first and most important expressway.

<gallery mode="packed" heights="150px">
File:NoojiJCT IncheonInternationalAirportExpressWay.jpg|Approaching [[Seoul]] from [[Incheon Airport]]
File:SeohaeGrandBridge.jpg|[[Seohae Bridge]]
File:Airport Town Square Junction Incheon Korea 20091031.jpg|Airport Town Square junction
File:Incheon bridge toll gate 20091031.jpg|Incheon Bridge Toll Gate
</gallery>

====Sri Lanka====
{{Main|Expressways of Sri Lanka}}
[[File:Sri Lanka Expressway Start Sign.svg|50px|left]]
[[File:Galle Expressway.JPG|thumb|The Southern Expressway [[E01 expressway (Sri Lanka)|(E01)]] in Sri Lanka]]
[[File:Sri Lanka E01 expressway.svg|50px|left]]

[[Sri Lanka]] currently has over {{cvt|350|km|mi}} of designated expressways serving the southern part of the country. The first stage of the E01 Expressway (Southern Expressway) which opened in 2011 was Sri Lanka's first expressway spanning a distance of {{cvt|95.3|km|mi}}. The second stage of the Southern Expressway opened in 2014 and extends to Matara. The E03 Expressway (Colombo–Katunayake Expressway) opened in 2013 and connects Sri Lanka's largest city [[Colombo]] with the Bandaranaike International Airport covering a distance of {{cvt|25.8|km|mi}}. All E-Grade highways in Sri Lanka are access controlled, toll roads with speeds limits in the range of {{cvt|80|-|110|km/h|mph}}. The network is to be expanded to {{cvt|518.5|km|mi}} by 2024.

Operational (fully or partially):

* {{jct|country=LKA|E|01}} [[Kottawa]]-[[Hambantota, Sri Lanka|Hambantota]]
* {{jct|country=LKA|E|02}} [[Kottawa]]-[[Kerawalapitiya]]
* {{jct|country=LKA|E|03}} [[Colombo]]-[[Katunayake]]
* {{jct|country=LKA|E|04}} Enderamulla-[[Kurunegala]]-[[Kandy]]
* {{jct|country=LKA|E|06}} Kahatuduwa-Pelmadulla

Planned:

* [[Colombo]] Metropolitan expressway ([[Colombo Fort]] to [[Peliyagoda]], connecting [[Colombo]] with the [[E03 expressway (Sri Lanka)]] Colombo-Katunayaka expressway.)

====Syria====
[[File:Autostrada Map-SYR.png|thumb|National highways in Syria]]

Syria has a well-developed system of motorways in the western half of the country. As the eastern part is underpopulated, it only has two lanes. Highways have been important in terms of transport for the ongoing [[Syrian Civil War|civil war]]. The main motorways are:

* [[M1 Motorway (Syria)|M1]] - Runs from Homs to Latakia. It also connects Tartus, Baniyas and Jableh. Its length is {{Convert|174|km|mi|abbr=on}}.
* [[M2 Motorway (Syria)|M2]] - Runs from Damascus to Jdeidat Yabous, on the border with Lebanon. It also connects Al-Sabboura. Its length is {{Convert|38|km|mi|abbr=on}}.
* [[M4 Motorway (Syria)|M4]] - Runs from Latakia to Saraqib. It also connects Arihah and Jisr al-Shughur. Its length is {{Convert|120|km|mi|abbr=on}}. It continues to the Iraqi border all the way to Mosul.
* [[M5 Motorway (Syria)|M5]] - Often described as the most important highway, it runs through much of the major cities in Syria and runs to the Jordanian border.

====Taiwan (Republic of China)====
{{Main|Highway system in Taiwan}}
[[File:TWHW1.svg|50px|left]]
[[File:Autobahnnetz Taiwan.svg|thumb|National highways of Taiwan]]

[[Taiwan]] has an extensive road network that includes two types of controlled-access highway: freeways and expressways. Only cars and trucks are allowed onto freeways, the first of which — [[Freeway 1 (Taiwan)|Freeway 1]] — was completed in 1974. Expressways allow car and truck traffic as well as motorcycles with engines of 250cc or more.

Expressways in Taiwan may be controlled-access highways similar to national freeways or limited-access roads. Most have urban roads and intra-city expressways (as opposed to Highway system) status, although some are built and maintained by cities.

<gallery mode="packed" heights="150px">
File:Light trail along Wugu–Yangmei Elevated Road.jpg|[[National Freeway 1|Freeway 1]] in [[New Taipei City]]
File:National Highway No. 1 (Taiwan).JPG|[[Taichung]] section
File:TaiwanFwy3Jct.jpg|Freeway entrance
</gallery>

====Thailand====
{{Main|Controlled-access highways in Thailand}}
{{multiple image
 | width = 160
 | image1 = Thai Motorway-t7.svg
 | alt1 = 
 | image2 = Thai Motorway-t9.svg
 | alt2 = 
 | footer = Signs for Motorway 7 and Motorway 9 (''Kanchanaphisek Road'')
}}
[[File:EXAT system overview map.svg|thumb|300px|upright|Sections of the expressway system]]

Controlled-access highways in Thailand are separated into urban expressways called ''expressways'', which are operated by the [[Expressway Authority of Thailand]] and [[Bangkok Expressway and Metro|BEM]] (except [[Don Mueang Tollway]], which is operated by Don Muang Tollway Public Company Limited) and have a span of {{cvt|280.4|km|mi}}, while intercity expressways are called [[Thai motorway network|''motorways'']], which have a span of {{cvt|187|km|mi}}. The network is to be extended to {{cvt|4,154.7|km|mi}} according to the master plan.

<gallery mode="packed" heights="150">
File:Makkasan Interchange at night by Mark Fischer.jpg|A motorway interchange in Makkasan, [[Bangkok]]
File:Srinagarindra Interchange head to Rama IX new sign.jpg|Srinagarindra Interchange head to Rama IX Road
</gallery>
{{Clear}}

====Uzbekistan====
{{Main|Transport in Uzbekistan}}
[[File:M39 Highway in Uzbekistan near Jomboy.jpg|thumb|M39 Highway near Jomboy]]

Uzbekistan has {{cvt|84,400|km}} of roads, about {{cvt|72,000|km}} of which were paved. Much of the highways are in need of repair, although the condition has been improving. In 2017, the governments of Kazakhstan and Uzbekistan agreed to open a section of the M39 Highway by the Kazakh border.

==== Vietnam ====
{{Main|Expressways of Vietnam}}
[[File:CT_01,_VNM.svg|50px|left|Vietnam's motorway sign]]
[[File:Vietnam Expressway map - Numbered.png|thumb|Expressway network of Vietnam]]

At present, the expressway system of Vietnam is {{cvt|895|km}} long. Under the government's plan, the national expressway system will have a total length of {{cvt|6,411|km}}. The expressway system in Vietnam is separate from the national highway system.<ref>{{cite web |url = https://thuvienphapluat.vn/van-ban/Xay-dung-Do-thi/Quyet-dinh-326-QD-TTg-quy-hoach-phat-trien-mang-duong-bo-cao-toc-Viet-Nam-2020-2030-2016-304266.aspx |title = Quy hoạch phát triển mạng đường bộ cao tốc Việt Nam đến năm 2020 và định hướng đến năm 2030 ( Planning on development of Vietnam's expressway network up to 2020 and orientation to 2030) |date = 1 March 2016 |website = Thư viện Pháp luật |language = vi }}</ref>

Most of the expressways are located in the North, especially around Hanoi. Of the 21 expressways in Vietnam, 8 emanate from Hanoi and 14 are in the north, with a length of {{cvt|1,368|km}}. The first expressway in Vietnam is the [[Ho Chi Minh City - Trung Luong Expressway]], which is inaugurated and opened for traffic on February 3, 2010.

Currently, most of the expressways in Vietnam are four-lane highways, with some routes like Ha Noi - Haiphong, and Phap Van - Cau Gie being six-lane. The only elevated expressway in Vietnam is Mai Dich - Thanh Tri Bridge (also known as the third beltway in Hanoi). The cost of building Vietnam's highways is one of the most expensive in the world, with an average cost of $12&nbsp;million per kilometre. Compared with China, where there are similarities, their highway costs only $5&nbsp;million per kilometre, where in the US and European countries, costs $3–4&nbsp;million per kilometre.<ref>{{cite web |url = https://znews.vn/duong-cao-toc-viet-nam-dat-gap-2-4-lan-the-gioi-post755100.html |title = Đường cao tốc Việt Nam đắt gấp 2-4 lần thế giới? |website = news.zing.vn |language = vi |date = 15 June 2017 |archive-url =https://web.archive.org/web/20170615110015/http://news.zing.vn/duong-cao-toc-viet-nam-dat-gap-2-4-lan-the-gioi-post755100.html|archive-date =2017-06-15|url-status =live}}</ref>

According to road traffic laws of Vietnam, an expressway is a road for motor vehicles, with a divider separating opposing traffic directions, no at-grade crossings with intersecting roads, fully equipped facilities to ensure continuous traffic flow, safety and short journey times, and access allowed only at interchanges.

<gallery mode="packed" heights="150px">
Quoclo1Amoi.JPG|Ha Noi - Bac Giang Expressway in Bac Ninh
Cầu Long Thành, Đường cao tốc TP.HCM - Long Thành - Dầu Giây.JPG|Long Thanh bridge of Ho Chi Minh City - Long Thanh - Dau Giay Expressway
Cao-toc-sai-gon-trung-luong-tuonglamphotos.jpg|Cho Dem - Ben Luc Viaduct of Ho Chi Minh City - Trung Luong Expressway
Lien Khuong - Da Lat highway 01.jpg|Lien Khuong - Prenn Pass Expressway
Cầu Vân Tiên - Cây cầu dài nhất tuyến cao tốc Vân Đồn - Móng Cái cũng là cây cầu dài nhất tỉnh Quảng Ninh.jpg|Van Tien bridge of Hai Phong - Mong Cai Expressway
</gallery>

===Europe===
Regarding road function, motorways serve exclusively the function of flow. They allow for efficient throughput of, usually long distance, motorized traffic, with unhindered flow of traffic, no traffic signals, at-grade intersections or property access and elimination of conflicts with other directions of traffic, thus, dramatically improving both safety and capacity.<ref name="ReferenceA"/>

Although roads are under the responsibility of each individual state, including within the European Union, there are some legal conventions (international treaties) and some European directives which give a legal framework for roads of a European importance with the goal to introduce some kind of homogenization between various members. They basically consider, at European level, three types of roads: motorways, express roads, and ordinary roads.<ref>including European main international traffic arteries are defined by ECE/TRANS/SC 1/384</ref>

Some European treaties also define aspects such as the range of speed limit, or for some geometric aspects of roads, in particularly for the [[International E-road network]].

According to [[Eurostat]]:

<blockquote>A motorway is a road specially designed and built for motor vehicle traffic, which does not directly provide access to the properties bordering on it. Other characteristics of motorways include:

* two separated carriageways for the opposing directions of traffic, except at special points or, temporarily, due to carriageway repairs etc.;
* carriageways that are not crossed at the level of the carriageway by any other road, railway or tramway track, or footpath; and
* the use of special signposting to indicate the road as a motorway and to exclude specific categories of road vehicles and/ or road users.
In determining the extent of a motorway its entry and exit lanes are included irrespective of the location of the motorway signposts. Urban motorways are also included in this term.</blockquote>

Most of the European countries use the above motorway definition but different national definitions of motorways can be found in some countries.<ref name="ReferenceA"/>

It is usually<ref name="ReferenceA"/> considered that:

* Motorways serve exclusively motorized traffic.
* Motorways have separate carriageways for the two directions of traffic.
* Motorways are not crossed at the same level by other roads, footpaths, railways
* Traffic entrance and exit is performed at interchanges only.
* Motorways have no access for traffic between interchanges and do not provide access to adjacent land.
* Motorways are especially sign-posted

Motorways status is signalled at the entry and exit of the motorway by a symbol conforming to international agreements, but specific to each country.<ref>{{cite web |author = SitiosArgentina.com.ar |url = http://www.sitiosargentina.com.ar/notas/2006/mayo/senales-transito.htm |title = Señales De Transito |website = Sitiosargentina.com.ar |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525171143/https://www.sitiosargentina.com.ar/notas/2006/mayo/senales-transito.htm |archive-date = 25 May 2017 }}</ref>

<gallery mode="nolines" heights="70" widths="80">
File:Sweden road sign E1.svg|Sweden
File:Spain traffic signal s1.svg|Spain
File:Zeichen 330 - Autobahn, StVO 1992.svg|Germany
File:UK motorway symbol.svg|United Kingdom, Ireland
File:CH-Hinweissignal-Autobahn.svg|Switzerland
File:Autoroute F.svg|France
File:Italian traffic signs - inizio autostrada.svg|Italy and Albania
File:Autostradă.svg|Romania
File:309 Diaľnica.svg|Slovakia
File:Portugal road sign H24.svg|Portugal
File:Avtopat.svg|North Macedonia
</gallery>

The peripheral northern and eastern regions of the EU have a lower density motorway network. Within the European Union, there are 26 regions ([[Nomenclature of Territorial Units for Statistics|NUTS]] level 2) with no motorway network in 2013. Those regions are islands or remote regions, for instance four overseas French regions and Corsica. The Baltic member state of Latvia, as well as four regions from Poland, and two regions from each of Bulgaria and Romania also reported no motorway network; several of these regions bordered onto adjacent non-member countries to the east of the EU.<ref>{{cite web |url = http://ec.europa.eu/eurostat/statistics-explained/index.php/Transport_statistics_at_regional_level |title = Transport statistics at regional level - Statistics Explained |website = Ec.europa.eu |date = 2012-01-18 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170720075012/http://ec.europa.eu/eurostat/statistics-explained/index.php/Transport_statistics_at_regional_level |archive-date = 20 July 2017 }}</ref>

European motorways provide reduced accident risks: 50% to 90% lower compared to standard roads, when new motorways only reduce injuries by 7%.<ref name="ReferenceA"/>

Some of the things which are considered as providing safety in the European motorways are central medians, grade separated interchanges, and access restrictions.<ref name="ReferenceA"/>

Nonetheless, some specific conditions provide a height risk of a more severe accidents, such as:

* improper use of emergency lane,
* cross-median head-on accidents,
* wrong direction accidents.<ref name="ReferenceA"/>

====Albania====
{{Main|Highways in Albania}}
[[File:Italian traffic signs - inizio autostrada (figura II 345).svg|left|88x88px]]
[[File:Harta autostrade Shqiperia.png|thumb|upright=0.8|Current map of Albanian motorways]]
[[File:Autostrada A1 Albania.svg|50px|left]]

Highways in Albania form part of the recent Albanian road system. Following the collapse of communism in 1991, the first highways in Albania started being constructed, The first was SH2, connecting Tirane with Durrës via Vora. Since the 2000s, main roadways have drastically improved, though lacking standards in design and road safety.<ref>{{cite web |url = http://www.dsdc.gov.al/dsdc/pub/strategjia_sektoriale_e_transportit_165_1.pdf |title = Archived copy |access-date = 19 June 2015 |url-status = dead |archive-url = https://web.archive.org/web/20130520122845/http://www.dsdc.gov.al/dsdc/pub/strategjia_sektoriale_e_transportit_165_1.pdf |archive-date = 20 May 2013 }}</ref><ref>{{cite web |url = http://siteresources.worldbank.org/INTALBANIA/Resources/Albania_National_Transport_Plan.pdf |title = Albania – National Transport Plan Phase 2 Study Phase |date=September 2004 |access-date = 19 June 2015 |url-status = dead |archive-url = https://web.archive.org/web/20160303214948/http://siteresources.worldbank.org/INTALBANIA/Resources/Albania_National_Transport_Plan.pdf |archive-date = 3 March 2016 }}</ref> This involved the construction of new roadways and the putting of contemporary signs. However, some state roads continue to deteriorate from lack of maintenance while others remain unfinished.

<gallery mode="packed" heights="150">
File:Autostrada Durrës-Morina-04.jpg|A1 Nation's Highway in Northern Albania connecting Albania with Kosovo
File:Krraba Tunnel.JPG|Krraba Tunnel on the A3 Tirana, [[Elbasan]], Albania
File:A2 Levan Vlora.JPG|A2 Fier - Vlore known as the Independence Highway
</gallery>

====Austria====
{{Main|Autobahns of Austria}}
[[File:Hinweiszeichen 8a.svg|50px|left]]
[[File:Autobahnen und Schnellstraßen in Österreich.svg|thumb|upright=1.15|A map of the Austrian Autobahn and Schnellstraße system. Blue = Autobahn; Green = Schnellstraße; Dotted = planned or under construction.]]
[[File:A1-AT.svg|50px|left]]

The Austrian autobahns (German: Autobahnen) are controlled-access highways in Austria. They are officially called ''Bundesstraßen'' A (Bundesautobahnen) under the authority of the federal government according to the Austrian Federal Road Act (Bundesstraßengesetz),<ref>{{cite web |url = http://www.ris.bka.gv.at/GeltendeFassung.wxe?Abfrage=Bundesnormen&Gesetzesnummer=10011428 |title = RIS - Gesamte Rechtsvorschrift für Bundesstraßengesetz 1971 - Bundesrecht konsolidiert, Fassung vom 18.07.2017 |website = Ris.bka.gv.at |date = 29 November 2008 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525171144/http://www.ris.bka.gv.at/GeltendeFassung.wxe?Abfrage=Bundesnormen&Gesetzesnummer=10011428 |archive-date = 25 May 2017 }}</ref> not to be confused with the former Bundesstraßen highways maintained by the Austrian states since 2002.

Austria currently has 18 Autobahnen, since 1982 built and maintained by the self-financed ASFiNAG stock company in Vienna, which is wholly owned by the Austrian republic and earns revenue from road-user charges and tolls. Each route bears a number as well as an official name with local reference, which however is not displayed on road signs. Unusually for European countries, interchanges (between motorways called Knoten, "knots") are numbered by distance in kilometres starting from where the route begins; this arrangement is also used in the Czech Republic, Slovakia, Hungary, Spain, and most provinces of Canada (and in most American states, albeit in miles). The current Austrian Autobahn network has a total length of {{cvt|1,720|km|mi}}.

<gallery mode="packed" heights="150px">
File:Brenner-Autobahn_mit_der_Europabrücke_bei_Patsch.jpg|Brenner Autobahn near Innsbruck
File:A22_Floridsdorfer_Brücke.jpg|A22 Donauuferautobahn, near the exit Floridsdorfer Brücke
</gallery>

====Belgium====
{{Main|List of motorways in Belgium}}
[[File:Belgian traffic sign F5.svg|50px|left]]
[[File:Autosnelwegen België.svg|thumb|upright=1.15|Motorways in Belgium]]
[[File:BE-A1.svg|50px|left]]

In 1937, the first motorway between [[Brussels]] and [[Ostend]] was completed, following the example of neighbouring countries such as [[Germany]]. It mainly served local industries and tourism as a connection between the capital city and a coastal region. However, the [[Second World War]] and the reparation of the complete road network after the war caused a serious delay in the creation of other motorways. In 1949, the first plans were made to build a complete motorway network of {{cvt|930|km|mi}} that would be integrated with the neighbouring networks. Although the plans were ready, the construction of the motorway network was much slower than in neighbouring countries because the project was deemed not to be urgent.

Because of economic growth in the 1960s, more citizens could afford cars, and the call for good-quality roads was higher than ever before. In each year between 1965 and 1973, over {{cvt|100|km|mi}} of motorway were built. At the end of the 1970s, the construction of motorways slowed down again due to costs, combined with an economic crisis, more expensive fuel and changing public opinion. In the following years, the only investments done were to complete already started motorway constructions. But most important cities were already connected. In 1981, the responsibilities for construction and maintenance of the motorways shifted from the federal to the regional governments. This sometimes caused tensions between the governments. For example, the part of the ring road around [[Brussels]] that crosses [[Wallonia]]n territory has never been finished, since only [[Flanders]] suffers from the unfinished ring.<ref>{{cite web |url=http://www.wegen-routes.be |title=Wegen-routes.be |archive-url=https://web.archive.org/web/20141218143201/http://wegen-routes.be/ |archive-date=18 December 2014}}</ref>

Belgium today has the longest total motorway length per area unit of any country in the world.{{citation needed|date=January 2012}} Most motorway systems in Belgium have at least three lanes in each direction. Nearly all motorways have overhead lighting including those in rural areas. The dense population of Belgium and the still unfinished state of some motorways, such as the ring roads around Brussels and [[Antwerp]] cause major traffic congestion on motorways. On an average Monday morning in 2012, there was a total of {{cvt|356|km|mi}}<ref>{{cite web |url = http://www.nieuwsblad.be/cnt/dmf20130321_00513320 |title = OVERZICHT. Hier staan we het meest in de file - Het Nieuwsblad |website = Nieuwsblad.be |date = 22 March 2013 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170622124336/http://www.nieuwsblad.be/cnt/dmf20130321_00513320 |archive-date = 22 June 2017 }}</ref> of traffic jams and the longest traffic jam of the year was {{cvt|1,258|km}},<ref>{{cite web |url = http://www.knack.be/nieuws/belgie/nooit-gezien-1-258-km-file-door-sneeuwval/article-normal-48136.html |title = Nooit gezien: 1.258 km file door sneeuwval - België |website = Knack.be |date =  2012-02-03|access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170627123736/http://www.knack.be/nieuws/belgie/nooit-gezien-1-258-km-file-door-sneeuwval/article-normal-48136.html |archive-date = 27 June 2017 }}</ref> purely on the motorways.

==== Bosnia and Herzegovina ====
[[File:Bosnia and Herzegovina road sign III-73.svg|50px|left]]
[[File:Znak-III-132-BIH.svg|50px|left]]

[[Bosnia and Herzegovina]] has more than {{cvt|208|km|mi}} of highway, which connects [[Kakanj]]-[[Sarajevo]]. There is a plan to build highway on [[European route E73|Corridor Vc]], which will go from [[Sava (river)|river Sava]], across [[Doboj]], Sarajevo and [[Mostar]] to [[Adriatic Sea]]. Next sections are [[Kakanj]]-Drivuša {{Convert|16|km|mi|abbr=on}}, Zenica Sjever-Drivuša {{Convert|11|km|mi|abbr=on}}, Svilaj-Odžak {{Convert|11|km|mi|abbr=on}}, Vlakovo-Tarčin {{Convert|20|km|mi|abbr=on}}, Počitelj-Bijača {{Convert|21|km|mi|abbr=on}}. The speed limit is {{cvt|130|km/h|mph}} or {{cvt|100|km/h|mph}} in tunnels.<ref>https://bihamk.ba/bs/vijesti/voznja-autocestom/112, (in Bosnian)</ref>

<gallery mode="packed" heights="150px">
File:A1 - Bijaca (2).JPG|[[A1 (Bosnia and Herzegovina)|A1]] motorway, exit [[Bijača]], towards the Zvirovići interchange
File:Mahovljanska.jpg|Mahovljanska interchange
File:Autobahn-Sarajevo.jpg|A1 motorway
</gallery>

====Bulgaria====
{{Main|Highways in Bulgaria}}
[[File:Bulgaria road sign Д5.svg|left|66x66px]]
[[File:Mw A1 BG.svg|50px|left]]
[[File:Bulgaria Highways.png|thumb|upright=1.15|Bulgarian motorway network]]

Legislation in [[Bulgaria]] defines two types of highways: motorways ({{Lang|bg|Aвтомагистрала}}, {{lang|bg-Latn|Avtomagistrala}}) and expressways ({{Lang|bg|Скоростен път}}, {{lang|bg-Latn|Skorosten pat}}). The main differences are that motorways have [[Shoulder (road)|emergency lanes]] and the maximum allowed [[speed limit]] is {{cvt|140|km/h|mph}}, while expressways do not have emergency lanes and the speed limit is {{cvt|120|km/h|mph}}. {{As of|2018|06}}, {{cvt|777|km|mi}} of motorways are in service, with another {{cvt|62|km|mi}} under various stages of construction. More than {{cvt|590|km|mi}} are planned. Also, several expressways are planned.

====Croatia====
{{Main|Highways in Croatia#Motorways}}
[[File:HR road sign C64.svg|left|50x50px|Sign used denote the start of an Autoroute]]
[[File:Motorway-A1-Hex-Green.svg|50px|left]]

The primary high-speed [[motorway]]s in [[Croatia]] are called '''''autoceste''''' (singular: ''autocesta''; {{IPA|hr|ˈaʊtotsesta|hr}}), and they are defined as roads with at least two lanes in each direction (including [[hard shoulder]]) and a speed limit of not less than {{cvt|80|km/h|mph}}. The typical speed limit is {{cvt|130|km/h|mph}}. As of 2017, there are {{cvt|1,313|km|mi}} of motorways in Croatia. There is also a category known as ''brza cesta'', meaning "expressway". These roads have a speed limit up to {{cvt|110|km/h|mph}} and are not legally required to be grade-separated, but nearly all are.

====Cyprus====
{{Main|Roads and motorways in Cyprus}}
[[File:Highway begin in Cyprus.png|left|50px]]
[[File:A1 Motorway Cyprus.svg|50px|left]]

Motorways (Greek: ''αυτοκινητόδρομος'', Turkish: ''Otoyol'') connect all cities in Cyprus, although in the territory under ''de facto'' Turkish control these do not meet international standards for the definition of motorways. In the areas administered by the Republic of Cyprus, motorway numbers are prefaced with the letter A, and run from A1 to A6, to distinguish them from all other roads, designated B roads. Of the A roads, all are designated motorways, except for the A4, linking Larnaca with Larnaca Airport.

Motorways are also distinguishable by the use of green-backed road signs, with standard international graphics, and text in yellow in Greek and white in English, distinguishable from B road signage, which has signs with blue backgrounds.

Motorway junctions are theoretically designated with junction numbers, but signage is not consistent is indicating the exit numbers.

====Czech Republic====
{{Main|Highways in the Czech Republic}}
[[File:CZ traffic sign IZ1a.svg|left|50px]]
[[File:Motorways in Czechia map.svg|thumb|Czech motorway network]]
[[File:CZ traffic sign IS16a - D1.svg|50px|left]]

The Czech Republic has currently (2023) {{cvt|1,363|km|mi}}<ref>[https://www.rsd.cz/web/guest/silnice-a-dalnice/delky-a-dalsi-data-komunikaci#zalozka-dalnice Délky a další data komunikací] (in Czech) {{Webarchive|url=https://web.archive.org/web/20230323022258/https://rsd.cz/web/guest/silnice-a-dalnice/delky-a-dalsi-data-komunikaci#zalozka-dalnice |date=23 March 2023 }}</ref> of motorways (''dálnice'') whose speed limit is {{cvt|130|km/h|mph}} (or {{cvt|80|km/h|mph}} within a town). The total length should be {{cvt|2,000|km|mi}} around 2030. The number of a motorway (in red) copies the number of the national route (in blue) which has been replaced by the motorway. There are also roads for motorcars (''silnice pro motorová vozidla''). Those common roads are not subject to a fee (in form of vignette) for vehicles with total weight up to {{cvt|3.5|t}} and their speed limit is {{cvt|110|km/h|mph}}, partially up to {{cvt|130|km/h|mph}}.

====Denmark====
{{Main|Motorways in Denmark}}
[[File:Denmark road sign E42.svg|left|50px]]
[[File:E20-DK.svg|50px|left]]

Denmark has a well covered motorway system today, which has been difficult to build due to the county's geography with many islands. The longest bridges are the [[Great Belt Fixed Link|Great Belt]] and the [[Øresund bridge|Øresund]] bridges to Skåne ([[Scania]]) in southern Sweden. Both are motorways with dual electrical train tracks added.

====Finland====
{{Main|Highways in Finland}}
[[File:Finland road sign E15.svg|left|50px]]
[[File:Motorways Finland.svg|thumb|upright=0.7|Motorways in Finland]]
[[File:Finland road sign F29-1.svg|50px|left]]

Finland has {{cvt|863|km|mi}} of motorway, which is only a small proportion of the whole highway network. More than half of the length of the motorway network consists of six radial motorways originating in [[Helsinki]], to [[Kirkkonummi]] ([[Länsiväylä]]), [[Turku]] ([[Finnish national road 1|Vt1]]/[[European route E18|E18]]), [[Tampere]] ([[Finnish national road 3|Vt3]]/[[European route E12|E12]]), [[Tuusula]] ([[Finnish national road 45|Kt45]]), [[Heinola]] ([[Finnish national road 4|Vt4]]/[[European route E75|E75]]) and [[Vaalimaa]] ([[Finnish national road 7|Vt7]]/[[European route E18|E18]]). These roads have a total length of {{cvt|653|km|mi}}. The other motorways are rather short sections close to the biggest cities, often designed to be bypasses. The motorway section on national roads [[Finnish national road 4|4]] and [[Finnish national road 29|29]], between [[Simo, Finland|Simo]] and [[Tornio]], is said to be the northernmost motorway in the world.

Finnish motorways do not have a separate road numbering scheme. Instead, they carry national highway numbers. In addition to signposted motorways, there are also some [[Two-lane expressway|limited-access two-lane expressways]], and other grade-separated four-lane expressways (perhaps the most significant example being [[Ring III]] near Helsinki).

<gallery mode="packed" heights="120">
File:Valtatie 1.jpg|[[Finnish national road 1|Valtatie 1]] near [[Halikko]]
File:Lassila KehaI+TietoEnator1m.jpg|[[Ring I]] (''Kehä I'') in [[Pohjois-Haaga]], a northern district of [[Helsinki]]
File:Itäväylä itäkeskuksen kohdalta kuvattuna.JPG|[[Itäväylä]] in [[Itäkeskus]], the center of [[East Helsinki]]
</gallery>

====France====
{{Main|Autoroutes of France}}
[[File:Autoroute F.svg|left|50px|Sign used denote the start of an Autoroute]]
[[File:France autoroutes map-fr.svg|thumb|upright=1.15|Map of French motorways (in yellow) and expressways (in red)]]
[[File:Autoroute française 1.svg|50px|left]]

The ''autoroute'' system in [[France]] consists largely of [[toll road]]s, except around large cities and in parts of the north. It is a network of {{cvt|11,882|km|mi}} worth of motorways. Autoroute destinations are shown in blue, while destinations reached through a combination of autoroutes are shown with an added autoroute logo. Toll autoroutes are signalled with the word ''péage'' (toll).

<gallery mode="packed" heights="150px">
File:Séparation A430 & A43.JPG|Cross between A430 motorway and A43 motorway
File:Autoroute A2 - Barrière de péage de Hordain-5705.jpg|alt=Barrière de péage|Toll barrier in Hordain (south of Hordain), on [[A2 autoroute|autoroute A2]]
</gallery>

====Germany====
{{Main|Autobahn}}
[[File:Zeichen 330 - Autobahn, StVO 1992.svg|50px|left]]
[[File:Deutschland Autobahnen Nummerierung.svg|thumb|upright=1.15|German motorways with numbering scheme]]
[[File:Bundesautobahn 1 number.svg|50px|left]]

Germany's network of controlled-access expressways includes all federal Autobahnen and some parts of [[Bundesstraße]]n and usually no [[Landesstraße|''Landesstraßen'']] (state highways), [[Kreisstraße|''Kreisstraßen'']] (district highways) nor [[Gemeindestraße|''Gemeindestraßen'']] (municipal highways). The federal ''Autobahn'' network has a total length of {{cvt|13,183|km|mi}} in 2020, making it one of the densest networks in the world.
The German autobahns have no general [[Speed limits in Germany#Autobahns|speed limit]] for some classes of vehicles (though nearly 30% of the total autobahn network is subject to local and/or conditional limits<ref>{{Cite web |title=BASt 2017 – Publikationen – Tempolimits auf Bundesautobahnen 2015 |url=https://www.bast.de/BASt_2017/DE/Publikationen/Fachveroeffentlichungen/Verkehrstechnik/Downloads/V1-BAB-Tempolimit-2015.html |website=www.bast.de}}</ref>), but the [[advisory speed limit]] (''[[Richtgeschwindigkeit]]'') is {{cvt|130|km/h|mph}}. The lower class expressways usually have speed limits of {{cvt|120|km/h|mph}} or lower.

<gallery mode="packed" heights="150">
File:Garching Bundesautobahn 9.jpg|German Motorway ([[Autobahn]]) - one of the world's earliest motorways
File:A5Langen.jpg|An autobahn with 4 lanes in each direction of travel for {{cvt|21|km|mi}}. The section between Zeppelinheim and Darmstadt is the oldest Autobahn.
File:Bundesarchiv B 145 Bild-F088783-0003, Bei Bad Honnef, Ferienverkehr auf der A 3.jpg|The [[Bundesautobahn 3|A 3]] in 1991
File:Verkehrszeichen auf der Bundesautobahn 20090320 001.JPG|Dynamic traffic signs on an Autobahn
</gallery>

====Greece====
{{Main|Highways in Greece}}
[[File:Traffic Sign GR - KOK 2009 OMOE-KSA 2003 - PI-27 - squared - VCT.svg|50px|left]]
[[File:Greekmotorways2017 2.jpg|thumb|upright=1.15|Map of Greece's motorway network]]
[[File:Autokinetodromos A1 number.svg|50px|left]]

[[Motorways in Greece|Greece's motorway network]] has been extensively modernised throughout the 1980s, 1990s and especially the 2000s, while part of it is still under construction. Most of it was completed by mid 2017 numbering around {{cvt|2,500|km|mi}} of motorways, making it the biggest highway network in Southeastern Europe and the Balkans and one of the most advanced in Europe.<ref>{{Cite news |url = http://www.ypodomes.com/index.php/special-editions/news-in-english/item/41928-greek-motorways-the-country-s-road-metro-has-now-emerged |title = Greek Motorways: The country's "road Metro" has now emerged - ypodomes.com |access-date = 3 August 2017 |language = el-gr |url-status = live |archive-url = https://web.archive.org/web/20170804014129/http://www.ypodomes.com/index.php/special-editions/news-in-english/item/41928-greek-motorways-the-country-s-road-metro-has-now-emerged |archive-date = 4 August 2017 }}</ref>

There are a total of 10 main routes throughout the Greek mainland and Crete, from which some feature numerous branches and auxiliary routes. Most important motorways are the [[A1 motorway (Greece)|A1 Motorway]] connecting Greece's two largest cities (Athens and Thessaloniki), the [[A2 motorway (Greece)|A2 motorway]] (Egnatia Odos), also known as the "horizontal road axis" of Greece, connecting almost all of Northern Greece from west to east and the [[A8 motorway (Greece)|A8 motorway]] (Olympia Odos) connecting Athens and Patras. Another important motorway is the [[A6 motorway (Greece)|A6 motorway]] (Attiki Odos), the main beltway of the Athens Metropolitan area.

<gallery mode="packed" heights="150px">
File:Motorway 1 (A1) as viewed from Katerini South interchange.png|[[A1 motorway (Greece)|A1]] south of [[Katerini]]
File:A2 Motorway, Greece - Section Siatista-Kozani - Kalamia Exit - 04.jpg|[[A2 motorway (Greece)|A2]] exit near [[Kozani]]
File:Athens-Kiffisia-aerial.jpg|Aerial view of an [[A6 motorway (Greece)|A6]] interchange north of [[Athens]]
</gallery>

====Hungary====
{{Main|Highways in Hungary}}
[[File:Hungary road sign E-016.svg|50px|left]]
[[File:Magyarország autópályái 2020 02 07 állapot szerint.png|thumb|upright=1.15|Highways in Hungary. Legend of sections:
{{legend|#00008B|in use}}
{{legend|#00B0F0|under construction}}
{{legend|#8FAADC|proposed}}]]
[[File:M1 (Hu) Otszogletu kek tabla.svg|50px|left]]

In Hungary, a controlled-access highway is called an {{lang|hu|[[autópálya]]}} (plural {{lang|hu|autópályák}}).

<gallery mode="packed" heights="150px">
File:M0 Eastern Sector.JPG|Eastern section of [[M0 motorway (Hungary)|M0]]
File:AutobahnM1HU-2.JPG|[[M1 motorway (Hungary)|M1]] between, [[Vértes Mountains|Vértes]] and [[Gerecse Mountains]]
File:Koroshegy viaduct 02.jpg|[[M7 motorway (Hungary)|M7 motorway]] in Köröshegyi völgyhíd
File:M7 Near Budapest.JPG|M1 - M7 common phase, near [[Budapest]]
</gallery>

====Ireland====
{{Main|Motorways in the Republic of Ireland}}
[[File:UK motorway symbol.svg|50px|left]]
[[File:M1-IE.svg|50px|left]]

In [[Republic of Ireland|Ireland]] the ''Local Government (Roads and Motorways) Act 1974'' made motorways possible, although the first section, the [[N7 road (Ireland)|M7 Naas Bypass]], did not open until 1983. The first section of the [[M50 motorway (Ireland)|M50]] opened in 1990, a part of which was Ireland's first [[Toll road|toll]] motorway, the [[West-Link]]. However it would be the 1990s before substantial sections of motorway were opened in Ireland, with the first completed motorway—the {{convert|83|km|mi|adj=on}} [[M1 motorway (Republic of Ireland)|M1 motorway]]—being finished in 2005.

Under the [[Transport 21]] infrastructural plan,<ref>{{cite web |url = http://www.transport21.ie/ |title = Transport 21 Infrastructure Plan, Ireland |publisher = Transport21.ie |access-date = 15 December 2010 |url-status = dead |archive-url = https://web.archive.org/web/20101121094808/http://www.transport21.ie/ |archive-date = 21 November 2010 |df = dmy-all }}</ref> motorways or high quality dual carriageways were built between [[Dublin]] and the major cities of [[Cork (city)|Cork]], [[Galway]], [[Limerick]] and [[Waterford]] by the end of 2010. Other shorter sections of motorway either have been or will be built on some other main routes. In 2007 legislation (the ''Roads Bill 2007'') was created to allow [[High Quality Dual Carriageway|existing roads]] be designated motorways by order because previously legislation allowed only for newly built roads to be designated motorways.

As a result, most HQDCs nationwide (other than some sections near Dublin on the [[N4 road (Ireland)|N4]] and [[N7 road (Ireland)|N7]], which did not fully meet motorway standards) were reclassified as motorways. The first stage in this process occurred when all the HQDC schemes open or under construction on the N7 and N8, and between [[Kinnegad]] and [[Athlone]] on the N6 and [[Kilcullen]] and south of [[Carlow]] on the N9, were reclassified motorway on 24 September 2008. Further sections of dual carriageway were reclassified in 2009.

As of December 2011, the Republic of Ireland has around {{cvt|1,017|km|mi}} of motorways.

<gallery mode="packed" heights="150">
File:NewM50Dublin.JPG|Gantry signage on the [[M50 motorway (Ireland)|M50]]
File:M8 at junction 15 tolled.JPG|A section of the [[M8 motorway (Ireland)|M8]]
</gallery>

====Italy====
{{Main|Autostrade of Italy}}
{{See also|Roads in Italy}}
[[File:Italian traffic signs - inizio autostrada.svg|left|50px]]
[[File:Italia - mappa rete autostradale.svg|thumb|upright=1.15|[[Autostrade of Italy|Autostrade (motorways) of Italy]]]]
[[File:Autostrada A1 Italia.svg|50px|left]]

[[Roads in Italy]] are an important mode of [[transport in Italy]]. The world's first motorway was the ''[[Autostrada dei laghi]]'', inaugurated on 21 September 1924 in [[Italy]]. It linked [[Milan]] to [[Varese]]; it was then extended to [[Como]], near the border with [[Switzerland]], inaugurated on 28 June 1925. [[Piero Puricelli]], the engineer who designed this new type of road, decided to cover the expenses by introducing a [[Toll road|toll]].<ref>{{cite web |url = http://german.about.com/library/blgermyth08.htm |title = German Myth 8: Hitler's Autobahn? |access-date = 3 April 2006 |url-status = live |archive-url = https://web.archive.org/web/20060508183403/http://german.about.com/library/blgermyth08.htm |archive-date = 8 May 2006 }}</ref><ref>{{cite web |url = http://local.aaca.org/bntc/mileposts/1924.htm |title = 1924 Mile Posts |access-date = 3 April 2006 |url-status = dead |archive-url = https://web.archive.org/web/20080312014538/http://local.aaca.org/bntc/mileposts/1924.htm |archive-date = 12 March 2008 }}</ref>

Other motorways (or ''autostrade'') built before [[World War II]] in [[Italy]] were [[Naples]]-[[Pompeii]], [[Florence]]-[[Pisa]], [[Padua]]-[[Venice]], [[Milan]]-[[Turin]], Milan-[[Bergamo]]-[[Brescia]] and [[Rome]]-[[Ostia (quarter of Rome)|Ostia]]. The total length of the [[Autostrade of Italy|Italian motorway system]] is about {{convert|7016|km}}, as of 30 July 2022.<ref>{{cite web |title=Aggiornamenti sull'evoluzione del regolamento europeo (AFIR) per la modifica della direttiva europea in materia di combustibili alternativi (DAFI) |trans-title=Updates on the evolution of the European regulation (AFIR) for the amendment of the European directive on alternative fuels (DAFI) |publisher=AISCAT |language=it |url=https://www.aiscat.it/wp-content/uploads/2022/12/AISCAT-1_2_2022-Edizione-Trimestrale.pdf}}</ref> To these data are added 13 motorway [[spur route]]s, which extend for {{convert|355|km}}.<ref>[https://www.stradeanas.it/it/le-strade/la-rete-anas/le-autostrade LE AUTOSTRADE]</ref> The density is {{convert|22.4|km}} of motorway for every {{convert|1000|km2}} of Italian territory.<ref>{{cite web|url=http://www.lestradedellinformazione.it/acm-on-line/Home/PrimoPiano/articolo4795.html|title=Le strade dell'informazione|access-date=3 March 2024}}</ref>

Italian motorways (or ''autostrade'') are mostly managed by concessionaire companies. From 1 October 2012 the granting body is the [[Ministry of Infrastructure and Transport (Italy)|Ministry of Infrastructure and Transport]] and no longer [[Anas (company)|Anas]]<ref>{{cite web|url=http://www.stradeanas.it/index.php?/content/index/arg/convenzioni_societa|title=nas S.p.A. - Le società concessionarie|access-date=3 March 2024}}</ref> and the majority ({{convert|5773.4|km}} in 2009<ref name=luz>{{cite web|url=http://www.stradeanas.it/index.php?/news/download/file/1617|title=Ispettorato Vigilanza Concessioni Autostradali - Attività ed obiettivi|access-date=3 March 2024}}</ref>) are subject to [[Toll (fee)|toll]] payments. On Italian motorways, the [[Toll (fee)|toll]] applies to almost all motorways not managed by [[Anas (company)|Anas]]. The collection of motorway tolls, from a tariff point of view, is managed mainly in two ways: either through the "closed motorway system" (km travelled) or through the "open motorway system" (flat-rate toll).<ref name="autostrade.it">[http://www.autostrade.it/il-pedaggio/come-si-calcola.html?initPosAra=4_1 Come si calcola il pedaggio - Autostrade per l'Italia S.p.A] {{webarchive|url=https://web.archive.org/web/20100406014722/http://www.autostrade.it/il-pedaggio/come-si-calcola.html?initPosAra=4_1 |date=6 April 2010 }}</ref>

Italy's motorways (or ''autostrade'') have a standard speed limit of {{cvt|130|km/h|mph|round=5}} for cars. Limits for other vehicles (or when visibility is poor due to weather) are lower. Legal provisions allow operators to set the limit to {{cvt|150|km/h|mph|round=5}} on their concessions on a voluntary basis if there are three lanes in each direction and a working [[SPECS (speed camera)|SICVE]], or Safety Tutor, which is a speed-camera system that measures the average speed over a given distance.

Type B highway ({{langx|it|[[strada extraurbana principale]]}}), commonly but unofficially known as ''superstrada'' (Italian equivalent for [[Limited-access road|expressway]]), is a divided highway with at least two lanes in each direction, paved shoulder on the right, no cross-traffic and no at-grade intersections. Access restrictions on such highways are exactly the same as motorways (or ''autostrade''). The signage at the beginning and the end of the ''[[strade extraurbane principali]]'' is the same, except the background colour is blue instead of green. The general speed limit on ''strade extraurbane principali'' is {{cvt|110|km/h|mph|round=5}}, unless otherwise indicated. ''Strade extraurbane principali'' are not tolled.

<gallery mode="packed" heights="150">
File:Autostrada A20 Torregrotta.jpg|[[Autostrada A20 (Italy)|Autostrada A20]] runs through the island of [[Sicily]] linking [[Palermo]] to [[Messina]]
File:MassarosaA11A12.JPG|[[Autostrada A11 (Italy)|Autostrada A11]] runs through [[Tuscany]] linking [[Florence]] to [[Pisa]]
File:Tribiano - tangenziale est esterna.jpg|[[Autostrada A58]] is the second [[ring road]] east of [[Milan]] after the [[Autostrada A51]]
File:A22 Autostrada - Brenner Pass from Verona to Bolzano (5994736833).jpg|[[Autostrada A22 (Italy)|Autostrada A22]] runs through [[Po Valley]] and [[Alps]] linking [[Modena]] to [[Brenner Pass]], a [[mountain pass]] which forms the [[Austria-Italy border|border between]] [[Italy]] and [[Austria]]
File:A4 uscita Bergamo.jpg|[[Autostrada A4 (Italy)|Autostrada A4]] runs through [[Po Valley]] linking [[Turin]] and [[Trieste]] via [[Milan]] and [[Venice]]
File:Fort of Bard.JPG|[[Autostrada A5 (Italy)|Autostrada A5]] connects [[Turin]] and the [[Aosta Valley]] to [[France]], through the [[Mont Blanc Tunnel]]
</gallery>

====Latvia====
{{Main|List of national roads in Latvia}}
[[File:A7-LV.svg|50px|left]]

There is currently one category of controlled-access highways in [[Latvia]], which are expressways ([[Latvian language|Latvian]]:''ātrgaitas ceļš'') with maximum speed {{Convert|120|km/h|mph|abbr=on}}. The first expressway in Latvia opened in October 2023, the Ķekava Bypass, which is a part of the [[A7 road (Latvia)|A7]].<ref>{{Cite web |date=2023-06-13 |title=Fotoreportāža: satiksmei atklāts Ķekavas apvedceļš |url=https://lvceli.lv/aktuali/fotoreportaza-satiksmei-atklats-kekavas-apvedcels/ |access-date=2024-11-01 |website=Latvijas Valsts Ceļi |language=lv}}</ref> Current length of the expressway network is {{Convert|11|km|mi|abbr=on}}.

====Lithuania====
{{Main|Transport in Lithuania#Highways}}
[[File:RU road sign 5.1.svg|left|75x75px]]
[[File:A1-LT.svg|50px|left]]

There are two categories of controlled-access highways in [[Lithuania]]: expressways ([[Lithuanian language|Lithuanian]]: ''greitkeliai'') with maximum speed {{Convert|120|km/h|mph|abbr=on}} and motorways ([[Lithuanian language|Lithuanian]]: ''automagistralės'') with maximum speed {{Convert|130|km/h|mph|abbr=on}}. The first section [[Vilnius]]–[[Kaunas]] of [[A1 highway (Lithuania)|A1 highway]] was completed in 1970. [[Kaunas]]–[[Klaipėda]] section of [[A1 highway (Lithuania)|A1]] was completed in 1987.<ref>{{cite web |title = Magistralės jubiliejus |url = http://www.tp.cargo.lt/content.php?art_id=2043 |publisher = Transporto pasaulis |access-date = 25 March 2010 |url-status = live |archive-url = https://web.archive.org/web/20110722150140/http://www.tp.cargo.lt/content.php?art_id=2043 |archive-date = 22 July 2011 }}</ref> [[Vilnius]]-[[Panevėžys]] ([[A2 highway (Lithuania)|A2 highway]]) was completed in stages during the 1980s and finished in the 1990s. Complete length of the motorway network is {{Convert|310|km|mi|abbr=on}}. Expressway network length - {{Convert|80|km|mi|abbr=on}}. Motorway section between [[Kaunas]] and the Polish border is planned to be completed in the 2020s.

<gallery mode="packed" heights="150px">
File:A1_by_Augustas_Didzgalvis.jpg|[[A1 highway (Lithuania)|A1 motorway]] near [[Kaunas]]
File:Kelias_A2,_ties_Tauj%C4%97nais.JPG|[[A2 highway (Lithuania)|A2 motorway]] near [[Taujėnai]]
File:U_turn_A2_Lithuania.JPG|Motorway junction with U-turns. [[A2 highway (Lithuania)|A2 motorway]] near [[Raguva]].
</gallery>

====Netherlands====
{{Main|List of motorways in the Netherlands}}
[[File:Nederlands verkeersbord G1.svg|left|50px|''Autosnelweg'']]
[[File:SnelwegenNederland 2008.png|thumb|upright=1.15|Motorways in the Netherlands]]
[[File:NL-A1.svg|50px|left]]

[[Roads in the Netherlands]] include at least {{cvt|2,758|km|mi}} of motorways and expressways,<ref name="CIA Roadways">{{cite web |url = https://www.cia.gov/library/publications/the-world-factbook/fields/2085.html#nl |title = CIA World Factbook &#124; Field listing: Roadways |date = 2012 |publisher = Central Intelligence Agency |access-date = 7 July 2014 |url-status = dead |archive-url = https://web.archive.org/web/20140522232116/https://www.cia.gov/library/publications/the-world-factbook/fields/2085.html#nl |archive-date = 22 May 2014 }}</ref> and with a motorway density of 64 kilometres per 1,000&nbsp;km<sup>2</sup> (103&nbsp;mi/1,000&nbsp;mi<sup>2</sup>), the country has one of the densest [[List of motorways in the Netherlands|motorway networks]] in the world.<ref name="OECDroadindic">{{cite press release |title = Road traffic, vehicles and networks &#124; Environment at a Glance 2013: OECD Indicators |url = http://www.oecd-ilibrary.org/road-traffic-vehicles-and-networks_5k3ts345b1g7.pdf |location = Paris, France |publisher = OECD Publishing |date = 2013 |access-date = 10 July 2014 }}</ref> About {{cvt|2,500|km|mi}} are fully constructed to motorway standards,<ref name="WW snelweg">{{cite web |url = http://www.wegenwiki.nl/Autosnelweg |title = Autosnelweg |work = WegenWiki |language = nl |trans-title = Motorway |date = 2012 |access-date = 2014-07-17 |url-status = live |archive-url = https://web.archive.org/web/20140711085234/http://www.wegenwiki.nl/Autosnelweg |archive-date = 11 July 2014 }}</ref> These are called ''Autosnelweg'' or simply ''snelweg'', and [[Route number|numbered]] and signposted with an ''A'' and up to three digits, like [[A12 motorway (Netherlands)|A12]].

They are consistently built with [[Dual carriageway|at least two carriageways]], [[Guard rail#Automotive safety|guard rails]] and [[Interchange (road)|interchanges]] with [[grade separation]]. Since September 2012, the nationwide maximum speed has been raised to {{cvt|130|km/h|mph}}, but on many stretches speed is still limited to {{cvt|120|or|100|km/h|mph}}. Dutch motorways may only be used by motor vehicles both ''capable'' and ''legally allowed'' to go at least {{cvt|60|km/h|mph}}.

In March 2020, the general speed limit on Dutch motorways was lowered to {{Convert|100|km/h|mph|abbr=on}} during the day (6 am until 7 pm). At night, the maximum speed is different per stretch, but {{Convert|130|km/h|mph|abbr=on}} remained the upper limit.

Dutch roads are used with a very high intensity in relation to the network length<ref name="OECDroadindic"/> and [[traffic congestion]] is common, due to [[List of sovereign states and dependent territories by population density|the country's high population density]]. Therefore, since 1979 large portions of the motorway network have been equipped with variable message signs and dynamic electronic displays, both of which are aspects of [[intelligent transportation system]]s. These signs can show a lower speed limit, as low as {{cvt|50|km/h|mph}}, to optimize the flow of heavy traffic, and a variety of other communications. Additionally there are peak, rushhour or plus lanes, which allow motorists to use the hard shoulder as an extra traffic lane in case of congestion. These extra lanes are observed by CCTV cameras from a traffic control center.

Less common, but increasingly, separate [[carriageway|roadways]] are created for local/regional traffic and long-distance traffic. This way the number of weaving motions across lanes is reduced, and the [[Traffic flow|traffic capacity]] per lane of the road is optimized. A special feature of Dutch motorways is the use of [[Porous asphalt|Porous Asphalt Concrete]], which allows water to drain efficiently, and even in heavy rain no water will splash up, in contrast to concrete or other [[road surface]]s. The Netherlands is the only country that uses PAC this extensively, and the goal is to cover 100% of the motorways with PAC, in spite of the high costs of construction and maintenance.

<gallery mode="packed" heights="150">
File:The Basketweave.svg|Local and express lanes connected using a [[Local-express lanes|basketweave]]
File:DRIP op A13 voor Kleinpolderplein.jpg|Dynamic Route Information Panel (DRIP) on [[A13 motorway (Netherlands)|Dutch A13 freeway]] during evening rush hour
</gallery>

====North Macedonia====
{{Main|Motorways in North Macedonia}}
[[File:Avtopat.svg|50px|left]]
[[File:Клучка А1-А2-А3.jpg|thumb|A1/A2/A4 Interchange at [[Miladinovci]], [[North Macedonia]]]]
[[File:Motorway-A1-Hex-Green.svg|50px|left]]

The total motorway network length in North Macedonia is {{cvt|317|km|mi}} as of Spring 2019. Another {{cvt|70|km|mi}} are under construction, {{Convert|57|km|mi|abbr=on}} (Ohrid to Kicevo) and {{Convert|13|km|mi|abbr=on}} ([[Skopje]] to Kosovo border). The stretch from Gostivar to Kicevo is planned to start with construction in 2021. The three motorway routes are [[A1 motorway (North Macedonia)|A1]], which is part of the European corridor [[European route E75|E-75]], [[A2 motorway (North Macedonia)|A2]] (part of [[European route E65|E-65]]) and the recently built [[A4 motorway (North Macedonia)|A4]] corridor that connects Skopje to Stip. A1 connects the northern border (Serbia) with the southern one (Greece), while A2 traverses the country from the East (Bulgaria border) to West (Albania border), but only the stretch from Kumanovo to Gostivar is a divided motorway, while the rest of the length is either an undivided two-way road or in the process of turning into a motorway.<ref>{{cite web |url = http://www.roads.org.mk/en |title = Start Page &#124; Public enterprise for state roads |website = Roads.org.mk |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170808000322/http://www.roads.org.mk/en |archive-date = 8 August 2017 }}</ref>

====Norway====
{{Expand section|date=May 2023}}
[[File:NO road sign 502.svg|50px|left]]

[[Norway]] has (2022) {{cvt|770|km|mi}} of motorways, in addition to {{cvt|498|km|mi}} of [[limited-access road]]s (in Norwegian ''motortrafikkvei'') where pedestrians, bicycles, etc. are forbidden, though with a bit lower standard than true motorway. Most of the network serves the big cities, chiefly [[Oslo]], [[Stavanger]] and [[Bergen]]. Northernmost motorway is, as of 2022, on E6 just south of [[Trondheim]]: see also the E6, E18 and the E39. Most motorways use four-ramp [[Dumbbell interchange]]s, but also [[Roundabout interchange]]s can be found. The first motorway was built in 1964, just outside Oslo. The motorways' road pattern layout is similar to those in the United States and Canada, featuring a yellow stripe towards the median, and white stripes between the lanes and on the edge. The speed limits are {{cvt|90|-|110|km/h|mph}}.

====Poland====
{{Main|Highways in Poland}}
[[File:HighwaysMapPoland.svg|thumb|Polish motorway and expressway network. Legend:
{{legend|green|Completed}}
{{legend|red|Under construction}}
{{legend|#DC00DC|[[Design-build]] contract}}
{{legend|#B07419|Under tender}}
{{legend|#C7C7C7|Planned}}]]
[[File:Znak D9.svg|50px|left]]
[[File:A1-PL.svg|50px|left]]

The highways in [[Poland]] are divided into motorways and expressways, both types featuring grade-separated [[Interchange (road)|interchanges]] with all other roads, [[Shoulder (road)|emergency lanes]], feeder lanes, wildlife protection measures and dedicated roadside [[rest area]]s. Motorways can be only [[dual carriageways]], while expressways can be dual or, rarely, [[single carriageway]]s. The start of an expressway in Poland is marked with a sign of white car on blue background, while number sign for an expressway is of red background and white letters, with the letter S preceding a number. Speed limits in Poland are {{Convert|140|km/h|mph|abbr=on}} on motorways and {{Convert|120|km/h|mph|abbr=on}} on dual-carriageway expressways.

The Regulation of the [[Council of Ministers of the Republic of Poland|Council of Ministers]] defines the network of motorways and expressways in Poland totalling about {{cvt|7,980|km|mi}} (including about {{cvt|2,100|km|mi}} of motorways).<ref name="rozp2004">{{Cite web|url=https://sip.lex.pl/akty-prawne/dzu-dziennik-ustaw/siec-autostrad-i-drog-ekspresowych-17100420|title=ROZPORZĄDZENIE RADY MINISTRÓW z dnia 15 maja 2004 r. w sprawie sieci autostrad i dróg ekspresowych}}</ref>

As of July 2022, there are {{cvt|4688|km|mi|0}} of motorways and expressways in operation (58% of the intended network), while contracts for construction of further {{cvt|1170|km|mi|0}} of motorways and expressways (15% of the intended network) are ongoing.<ref>{{Cite web|url=https://www.gddkia.gov.pl/pl/|title=Autostrady:: Generalna Dyrekcja Dróg Krajowych i Autostrad - Strona Główna|website=www.gddkia.gov.pl}}</ref>

<gallery mode="packed" heights="150px">
File:A4_Zalas_04.jpg|A4 near Zalas, opened in 1983
File:Wezelsosnicafromthesky.JPG|Interchange of [[Autostrada A1 (Poland)|A1]] and [[Autostrada A4 (Poland)|A4]] near [[Gliwice]]
File:New bridge (Rędziński).jpg|[[Rędziński Bridge]]
File:Wrocław, Autostradowa obwodnica Wrocławia A8 (AOW) - fotopolska.eu (239268).jpg|[[Wrocław]] Stadion junction
File:S5_Bydgoszcz_z_węzła_Lotnisko_2.jpg|[[Expressway S5 (Poland)|Expressway S5]] near [[Bydgoszcz]]
</gallery>

====Portugal====
{{Main|Roads in Portugal#Motorways}}
[[File:Portugal road sign H24.svg|50px|left]]
[[File:A1-PT.svg|50px|left]]

[[Portugal]] was the third country in Europe—after Italy and Germany—to build a motorway ({{langx|pt|autoestrada}}, plural: {{lang|pt|autoestradas}}), opening, in 1944, the [[Lisbon]]-[[Estádio Nacional]] section of the present [[A5 motorway (Portugal)|A5 (''Autoestrada da Costa do Estoril'')]].<ref>{{cite web |url=http://www.ipim.gov.mo/worldwide_partner_detail.php?tid=3431&mode=print&lang=pt-pt |title=Portugal |website=IPIM |archive-url=https://web.archive.org/web/20150214013727/http://www.ipim.gov.mo/worldwide_partner_detail.php?tid=3431&mode=print&lang=pt-pt |archive-date=14 February 2015}}</ref>

Additional motorway sections were built in the 1960s, 1970s and early 1980s. However, the large-scale building of motorways started only in the late 1980s. Currently, Portugal has a very well-developed network of motorways, with about a {{convert|3,000|km|mi|adj=on}} extension, that connects all the highly populated coastal regions of the country and the main cities of the less populous interior. This means that 87% of the Portuguese population lives at less than 15 minutes' driving time from a motorway access.<ref>[https://archive.today/20120707231635/http://dn.sapo.pt/inicio/interior.aspx?content_id=1136725 Portugal é dos países com mais autoestradas na Europa] Diário de Notícias—acedido em 21 April 2009{{full citation needed|date=July 2018}}</ref>

Unlike the neighbouring Spanish network, most of Portuguese motorways are tolled, although there are also some non-tolled highways, mostly in urban areas, like those of [[Greater Lisbon]] and [[Greater Oporto]]. In the late 1990s and early 2000s, the [[Government of Portugal]] created seven [[shadow toll]] concessions, the SCUT toll ({{lang|pt|Sem custos para o utilizador}}, no costs for the user). In those concessions it were included more than {{cvt|900|km|mi}} of motorways and highways, some of them already built, others which were built in the following years. However, due to economical and political reasons, the shadow toll concept was abolished between 2010 and 2011, with electronic toll equipment being installed in these motorways, to charge their users. Having only electronic tolls, former SCUT motorways can now only be used by vehicles equipped with electronic payment devices or vehicles registered in the system.

Portuguese motorways form an independent network ({{lang|pt|Rede Nacional de Autoestradas}}, National Motorway Network), that overlaps with the Fundamental and Complementary subnetworks of the National Highway Network ({{lang|pt|Rede Rodoviária Nacional}}). Each motorway section overlapping with the Fundamental subnetwork is part of an IP ({{lang|pt|Itinerário principal}}, Principal route) and each motorway section overlapping with the Complementary subnetwork is part of an IC ({{lang|pt|Itinerário complementar}}, Complementary route). Thus, a motorway can overlap with sections of different IP or IC routes and - on the other hand - an IP or IC route can overlap with sections of different motorways. An example is [[A22 motorway (Portugal)|A22 motorway]], which overlaps with sections of IP1 and of IC4 routes; another example is IP1 route, which overlaps with sections of the A22, [[A2 motorway (Portugal)|A2]], A12, [[A1 motorway (Portugal)|A1]] and [[A3 motorway (Portugal)|A3]] motorways.

The National Motorway Network has a proper numbering system in which each motorway has a number prefixed by the letter "A". In most cases, a motorway signage indicates only its A number. The number of the IP or IC of which a motorway section is a part is not signed except in some short motorways which lack a proper A number.

<gallery mode="packed" heights="150px">
File:A5 Lisbon.jpg|A5 (Lisbon-Cascais) motorway, inaugurated in 1944 as the first motorway in Portugal
File:Auto estrada A1.jpg|A1 (Lisbon-Oporto) motorway, the main road link between the two largest cities of the country
File:Viaduto do Corgo (Corgo Viaduct), Vila Real, Portugal (2015-01) (17679614363)2.jpg|[[Vila Real Bridge|Corgo viaduct]], part of the A4 (Oporto-Bragança) motorway
File:A27 Ponte Lima Viana Castelo 20050801.jpg|Tunnel at the A27 (Ponte de Lima-Viana do Castelo) motorway
</gallery>

====Romania====
{{Main|Highways in Romania}}
[[File:Autostradă.svg|50px|left]]
[[File:Romania Motorways DE 1.svg|thumb|upright=1.15|Planned motorways in Romania]]
[[File:A1-RO.svg|50px|left]]

As of 23 December 2024, Romania has {{cvt|1,275.47|km|mi}} of highways in use, with more under construction.<ref>{{cite web |title= Motorway (A) and Expressway (DEx) in use [Rețea în trafic - Autostrăzi și Drumuri Expres] |url=http://www.cnadnr.ro/sites/default/files/proiecte/situatia%20proiectelor%20autostrazi_0.pdf |last=1,275.47 Km (2024-12-23) [7.9 Km of the official total are not yet in use] |publisher=Ministry of Transportation - Romania (CNAIR) |website=www.cnadnr.ro |date=2025-01-08 |access-date=2025-01-12 |language=ro}}</ref>

The first motorway in Romania was completed in 1972, linking [[Bucharest]] and [[Pitești]].<ref name="IPT-BP">{{cite web |title = Iptana, 50 de ani de proiectare pentru infrastructura transporturilor |url = http://www.iptana.ro/romania/download/PARTEA%20II_Drumuri.pdf |publisher = Iptana |language = ro |date = 10 September 2003 |access-date = 8 August 2015 |url-status = live |archive-url = https://web.archive.org/web/20150924040018/http://www.iptana.ro/romania/download/PARTEA%20II_Drumuri.pdf |archive-date = 24 September 2015 }}</ref> The [[Government of Romania|Romanian Government]] has adopted a General Master Plan for Transport that was approved by the European Union in July 2015, containing the strategy for expanding the road (including motorway) network until 2040, using EU co-financing.<ref>{{cite web |title = Documente Master Plan General de Transport |url = http://www.mt.ro/web14/strategia-in-transporturi/master-plan-general-transport/documente-master-plan |publisher = Romanian Ministry of Transport |language = ro |access-date = 8 August 2015 |url-status = dead |archive-url = https://web.archive.org/web/20150322205555/http://mt.ro/web14/strategia-in-transporturi/master-plan-general-transport/documente-master-plan |archive-date = 22 March 2015 }}</ref>

<gallery mode="packed" heights="150px">
File:A1 Arad-Timisoara - 02.JPG|A1 motorway between Arad and Timișoara
File:A1 (Rumänien) 03.JPG|A1 motorway near Sibiu
File:A2 motorway Romania.JPG|A2 motorway near Cernavodă interchange
File:A3 (Romania).jpg|A3 motorway between Gilău and Turda
File:A7 Bacău Bypass, Holt Interchange.jpg|A7 motorway near Bacău Bypass
File:A10 motorway between Turda and Aiud, Romania.jpg|A10 motorway and the hills of Transilvania
</gallery>

====Russia====
{{Main|List of motorways in Russia}}
[[File:RU road sign 5.1.svg|left|75x75px]]
[[File:Autobahnen und Schnellstraßen in Russland.png|thumb|Motorways and expressways in Russia. Legend:{{Legend-line|2px solid #00bc00|Motorway}}{{Legend-line|2px dashed#00bc00|Motorway planned or under construction}}{{Legend-line|2px solid #0000dc|Expressway}}{{Legend-line|2px dashed#0000dc|Expressway planned or under construction}}]]
[[File:M1-Green-RUS.svg|left|50x50px]]

In 2025, [[Russia]] will have a nationwide motorway network with a length of {{Convert|1866|km|abbr=on}} and expressway network of {{Convert|2752|km|abbr=on}}.{{citation needed|date=June 2025}}

The motorways and expressways have the numbering of the [[Russian federal highways|Russian federal highway network]] or their own name, as there is no separate numbering system for motorways and expressways and their sections are mostly part of the Russian federal highway network. The legal [[speed limit]] on motorways and expressways is 110&nbsp;km/h, and 130&nbsp;km/h<ref>{{Cite web |title=На трассах М-11 и М-4 повысят скоростной режим до 130 км/ч |url=https://www.autonews.ru/news/64380ef29a7947ab7b2306e2 |access-date=2024-08-30 |website=Autonews |language=ru}}</ref> on some newly upgraded sections of motorway. Sections of Russian federal highway that have been upgraded to motorway status are marked with green signs. Federal highway roads that have been upgraded to expressways or [[Dual carriageway|dual and single carriageway]] with [[road junction]] are marked with blue signs.

In the classification of Russian federal highway roads, motorways are assigned to technical category IA and expressways to technical category IB.<ref>{{cite web |title=Классификация автомобильных дорог |url=https://docs.nevacert.ru/files/gost/gost_r_52398-2005.pdf |access-date=2024-01-21 |language=ru}}<!-- auto-translated from German by Module:CS1 translator --></ref>

<gallery mode="packed" heights="150">
File:Транспортная развязка на пересечении М-2 «Крым» и А-107 «Московское малое кольцо» (август 2017).jpg|Transportation interchange at the intersection of [[M2 highway (Russia)|M2]] and [[Moscow Small Ring Road|A107]]
File:М11 указатель.jpg|Motorway [[Moscow–Saint Petersburg motorway|M11]] between [[Moscow]] and [[Klin, Klinsky District, Moscow Oblast|Klin]]
File:Die neu eröffnete Autobahn M4 bei Nowotscherkassk.jpg|Motorway [[M4 highway (Russia)|M4]] in [[Novocherkassk]]
File:M9 Istrinsky District 2.JPG|Motorway [[M9 highway (Russia)|M9]] and European route [[European route E22|E22]] with green signs 
File:Развязка на М11 1.jpg|Motorway [[Moscow–Saint Petersburg motorway|M11]] interchange [[Okulovka (town), Novgorod Oblast|Okulovka]]
File:Spb 06-2017 img39 Krestovsky Stadium.jpg|The [[Western High-Speed Diameter]] next to the [[Krestovsky Stadium]]
</gallery>

====Serbia====
{{Main|Motorways in Serbia}}
[[File:Motorway.png|left|75x75px]]
[[File:Мапа ауто-путева октобар 2023..jpg|thumb|upright=0.9|Serbian motorway network
{{legend|green|finished}}
{{legend|red|under construction}}
{{legend|gray|planned}}]]
[[File:Motorway-A1-Hex-Green.svg|50px|left]]

Motorways ({{langx|sr|Аутопут |translit=Autoput}}) and expressways ({{langx|sr|Брзи пут |translit=Brzi put}}) are the backbone of the road system in [[Serbia]]. There are around {{cvt|906|km|mi}} of motorways in total. Plan is {{cvt|1,200|km|mi}} by the end of 2018.

Motorways in Serbia have three lanes (including emergency lane) in each direction, signs are white-on-green, as in the rest of former Yugoslavia and the normal speed limit is {{cvt|130|km/h|mph}}.

Expressways, unlike motorways, do not have emergency lanes, signs are white-on-blue and the normal speed limit is {{cvt|100|km/h|mph}}.

As the Serbian word for motorway is ''autoput'', the "A1", "A2" or "A3" [[road designation]]s are used since November 2013.<ref>{{cite journal |title = Uredba o kategorizaciji državnih puteva |journal = Official Gazette of the Republic of Serbia |date = 29 November 2013 |issue = 105 |url = http://www.slglasnik.info/sr/Obave%C5%A1tenja/Obave%C5%A1tenja/Objavljen-broj-105/2013.html |url-access=subscription  |url-status = live |archive-url = https://web.archive.org/web/20150924102619/http://www.slglasnik.info/sr/Obave%C5%A1tenja/Obave%C5%A1tenja/Objavljen-broj-105/2013.html |archive-date = 24 September 2015 }}</ref> All state roads categorized as class I, that are motorways currently of in the future, are marked with one-digit numbers and known as class Ia. All other roads, which belong to class I, are marked with two-digit numbers and known as class Ib. Expressways belong to class Ib, too. [[International E-road network|E-numeration]] is also widely used on motorways.

The core of the motorways is what was once called during Yugoslav period, the [[Brotherhood and Unity Highway]], which was opened in 1950 and goes from the border with Croatia, through [[Belgrade]], Central Serbia, [[Niš]], and to border with North Macedonia. It was one of the first modern highways in Central-Eastern Europe. It is the most direct link between Central and Western Europe with Greece and Turkey, and subsequently the Middle-East.

<gallery mode="packed" heights="150">
File:E-75 in Serbia.JPG|[[A1 motorway (Serbia)|A1]]/[[European route E75|E-75]] motorway in Serbia
File:Petlja Dobanovci - Niš - Budapest.jpg|Dobanovci interchange, directions to [[Niš]] and [[Budapest]]
File:Motorway A2 (Serbia), Tunnel Savinac.jpg|Motorway [[A2 motorway (Serbia)|A2]], Tunnel Savinac
</gallery>

====Slovakia====
{{Main|Highways in Slovakia}}
[[File:309 Diaľnica.svg|50px|left]]
[[File:D1-SVK-2020.svg|50px|left]]
[[File:Highway network in slovakia.pdf|thumb|Highway network in Slovakia]]

[[Slovakia]] has currently (2022) {{cvt|854|km|mi}} of motorways ({{langx|sk|diaľnica}}, ''D'') and [[Limited-access road|expressways]] ({{lang|sk|rýchlostná cesta}}, ''R'') whose speed limit is {{cvt|130|km/h|mph}}. They are split into expressways and motorways like Poland with expressways starting with a R, short for "rýchlostná cesta", but from April 2020 all the expressways in Slovakia were known as motorways due to that the expressways are very similar to the motorways in Slovakia. An e-vignette is paid to use the motorways in Slovakia, while before you used to pay a sticker vignette but from 2016 you pay electronically through the website.

<gallery mode="packed" heights="150">
File:Slovakia15D1Highway92.JPG|Motorway [[D1 motorway (Slovakia)|D1]] near [[Spišské Podhradie]] with [[Spiš Castle]] in the background
File:Povazsky Chlmec.jpg|Považský Chlmec Tunnel on [[D3 motorway (Slovakia)|D3]] before opening
File:VysokeTatry11Slovakia17.JPG|View of the [[High Tatras]] from the D1 near [[Poprad]]
File:R1Expressway11Slovakia29.jpg|Expressway [[R1 expressway (Slovakia)|R1]] near [[Nitra]]
File:Dopravná značka IP23a.svg|Old sign for motorways
File:Dopravná značka IP22a.svg|Old sign for expressways
File:D4 luzny bridge.jpg|The [[D4 motorway (Slovakia)|D4]] crossing the [[Danube]] river
File:Povazka Bystrica viaduct.jpg|The [[Považská Bystrica]] viaduct
</gallery>

====Slovenia====
{{Main|Highways in Slovenia}}
[[File:Slovenia road sign III-10.svg|50px|left]]
[[File:Motorways-SLO-map 2018.jpg|upright=1.2|thumb|Motorways in Slovenia
{{legend|#0D88D3|in use}}
{{legend|#f89c35|under construction}}
{{legend|#ee11aa|planned}}]]
[[File:Avtocesta A1.svg|50px|left]]

The highways in Slovenia are the central state roads in Slovenia and are divided into [[motorway]]s ({{langx|sl|avtocesta}}, ''AC'') and [[Limited-access road|expressways]] ({{lang|sl|hitra cesta}}, ''HC''). Motorways are [[dual carriageways]] with a speed limit of {{cvt|130|km/h|mph}}. They have white-on-green road signs as in Italy, Croatia and other countries nearby. Expressways are secondary roads, also dual carriageways, but without an [[emergency lane]]. They have a speed limit of {{cvt|110|km/h|mph}} and have white-on-blue road signs.

<gallery mode="packed" heights="150px">
File:Avtocesta A1 v Vodolah.jpg|[[A1 motorway (Slovenia)|A1 motorway]] at [[Vodole]]
Klanec Medvedjek A2.jpg|The Medvedjek Slope on the eastern part of the [[A2 motorway (Slovenia)|A2]] ([[Lower Carniola]])
File:Toll station Log Slovenia 2.jpg|The toll station at Log pri Brezovici
Avtocesta a1 IMG 2347,.jpg|A1 near [[Postojna]]
</gallery>

====Spain====
{{Main|Highways in Spain}}
[[File:Spain traffic signal s1.svg|50px|left]]
[[File:Red alta capacidad españa.svg|thumb|upright=1.2|Map of Spanish ''autopistas'' (motorways) and ''autovías'' (expressways)]]
[[File:ESP AP-1.svg|50px|left]]

The Spanish network of ''autopistas'' and ''autovias'' has a length of {{cvt|17,228|km|mi}}, making it the largest in Europe and the third in the world.<ref>{{Cite web|title=Catálogo y evolución de la red de carreteras {{!}} Ministerio de Transportes, Movilidad y Agenda Urbana|url=https://www.mitma.gob.es/carreteras/catalogo-y-evolucion-de-la-red-de-carreteras|access-date=2021-03-10|website=www.mitma.gob.es}}</ref> ''Autopistas'' are specifically reserved for automobile travel, so all vehicles not able to sustain at least {{cvt|60|km/h|mph}} are banned from them. General speed limits are mandated by the Spanish Traffic Law as {{cvt|60|-|120|km/h|mph}}. Specific limits may be imposed based on road, meteorological or traffic conditions. Spanish legislation requires an alternate route to be provided for slower vehicles. Many, but not all, autopistas are toll roads, which also mandates an alternate toll-free route under the Spanish laws.

<gallery mode="packed" heights="150">
File:M40 outside Madrid.jpg|The [[M-40 (Spain)|M-40]] autopista (motorway) is one of the beltways serving Madrid. It is one of the few non-toll autopistas of significant length.
File:A5 Navalcarnero.jpg|The [[Autovía del Suroeste|A-5]] autovía (expressway) near Navalcarnero, [[Province of Madrid|Madrid]]. Note the mostly nonexistent acceleration lane in the road joining from the bottom right.
File:Algaba.jpg|Modern autovías (expressway) such as the A-66 near Guillena, [[Province of Seville|Seville]], offer most, if not all, features that are required by an autopista (motorway).
</gallery>

====Sweden====
{{Main|List of motorways in Sweden}}
{{Update section|date=May 2023}}
[[File:Sweden road sign E1.svg|50px|left]]
[[File:Motorways Sweden.svg|thumb|upright=0.8|Map of Swedish motorways]]
[[File:E20 (Sverige).svg|50px|left]]

[[Sweden]] has the largest motorway network in [[Scandinavia]] ({{convert|2,050|km|mi|disp=comma|sigfig=4}}).<ref>{{cite web |url = http://www.trafikverket.se/Privat/Vagar-och-jarnvagar/Sveriges-vagnat/ |title = Sveriges vägnät - Trafikverket |website = Trafikverket.se |date = 28 June 2016 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20150718033451/http://www.trafikverket.se/Privat/Vagar-och-jarnvagar/Sveriges-vagnat |archive-date = 18 July 2015 }}</ref> It is, however, unevenly allocated. Most motorways are located in the south of the country, where the [[Demographics of Sweden|population density is the highest]].

The first motorway in Sweden opened in 1953, between [[Lund]] and [[Malmö]]. Four-lane expressways had been built before, an early example is [[European route E20|E20]] between [[Gothenburg]] and [[Alingsås]], built in the early 1940s. Most of the current network was built in the 1970s and 1990s.

'''[[European route E6|E6]]''' starts i [[Trelleborg]] in southern Sweden, it then continues along the Swedish western coast, up to the [[Svinesund bridge]] which is where Sweden borders to Norway. Its length is close to {{cvt|600|km|mi}} on Swedish territory alone, and it connects four of [[Scandinavia]]'s six largest cities, [[Copenhagen]], [[Malmö]], [[Gothenburg]] and [[Oslo]] together,<ref>{{cite web |url = http://e6.se/150706-hela-e6-motorvag-fran-kopenhamn-till-oslo/ |title = 150706 Hela E6 motorväg från Köpenhamn till Oslo – |website = E6.se |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525171502/http://e6.se/150706-hela-e6-motorvag-fran-kopenhamn-till-oslo/ |archive-date = 25 May 2017 }}</ref><ref>{{cite web |url = http://www.gp.se/nyheter/g%C3%B6teborg/i-dag-invigs-sista-etappen-av-e-6-1.112134 |title = I dag invigs sista etappen av E 6 &#124; Göteborgs-Posten - Göteborg |website = Gp.se |date = 6 July 2015 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525171951/http://www.gp.se/nyheter/g%C3%B6teborg/i-dag-invigs-sista-etappen-av-e-6-1.112134 |archive-date = 25 May 2017 }}</ref><ref>{{cite web |author = Linda Bergh |url = http://www.expressen.se/gt/tog-60-ar-att-bygga-klart-motorvagen/ |title = Tog 60 år att bygga klart motorvägen &#124; GT |website = Expressen.se |date = 6 July 2015 |access-date = 18 July 2017 |url-status = live |archive-url = https://web.archive.org/web/20170525170755/http://www.expressen.se/gt/tog-60-ar-att-bygga-klart-motorvagen/ |archive-date = 25 May 2017 }}</ref> as well as around 20 other more or less notable towns and cities.

A Swedish (partly motorway) route (rather than road) that also has a significant portion of the Swedish motorway network, is [[European route E4]], which runs from the border city of [[Tornio]] in northern Finland to [[Helsingborg]] in southern Sweden. E4 is the main route that connects the capital Stockholm with [[Scania]]. All of E4 south of the city [[Gävle]] is of motorway standard. The part of E4 that runs through western [[Stockholm]] is called [[Essingeleden]] and is the busiest road in Sweden.

Other highways that have a significant portion of motorway standard are E20, [[European route E18|E18]] and [[European route E22|E22]]. Motorways in Sweden are however not restricted to European routes; so called [[Riksväg]]ar and other regional road types can also be of motorway standard. An example of this is Riksväg 40. Riksväg 40 is the main link between the largest cities in the country, Stockholm and [[Gothenburg]]. Notably, not even the majority of the [[European route|European route- network]] in Sweden is motorway or even have expressway standard. All of this is because road numbering and road standard is separate in Sweden, as in the rest of Scandinavia.

<gallery mode="packed" heights="150px">
File:E22 Nättraby motorväg västerut mot Karlskrona.jpg|E22 Motorway westbound towards [[Karlskrona]]
File:Sodra lanken vasterut.jpg|The [[Södra länken]] Rv-75 ring road in [[Stockholm]]
</gallery>

====Switzerland====
{{Main|Motorways of Switzerland}}
[[File:CH-Hinweissignal-Autobahn.svg|50px|left]]
[[File:Image-Swiss-Highway-network-en.png|thumb|upright=1.2|Swiss highway network]]
[[File:A1Swiss.svg|50px|left]]

Switzerland has a two-class highway system: motorways with separated roads for oncoming traffic and a standard maximal speed limit of {{cvt|120|km/h|mph}}, and expressways often with oncoming traffic and a standard maximal speed limit of {{cvt|100|km/h|mph}}.

In [[Switzerland]] as of April 2011, there were {{convert|1763.6|km|mi}} of a planned {{convert|1893.5|km|mi}} of motorway completed. The country is mountainous with a high proportion of tunnels: there are 220 totalling {{convert|200|km|mi}}, which is over 12% of the total motorway length.<ref>{{cite web |url = https://www.tispol.org/guides/switzerland.pdf |title = European Traffic Police Network (TISPOL) |work = TISPOL |access-date = 7 April 2012 |url-status = live |archive-url = https://web.archive.org/web/20130602221045/https://www.tispol.org/guides/switzerland.pdf |archive-date = 2 June 2013 |df = dmy-all }}</ref>

<gallery mode="packed" heights="150px">
File:Gotthard autobahn.jpg|Autobahn [[A2 motorway (Switzerland)|A2]] near the northern portal of the [[Gotthard tunnel]]
File:A3 - Käferberg - Zürich-Wollishofen-Brunau 2010-09-10 15-51-52.JPG|[[A3 motorway (Switzerland)|A3]] in [[Zürich]]
File:CH HighwayPictures AG 62.jpg|Autobahn [[A1 motorway (Switzerland)|A1]]/A3 near Birrfeld
</gallery>

====Turkey====
{{Main|List of motorways in Turkey}}
[[File:Turkey road sign B-18 (2).svg|50px|left]]
[[File:Motorway Map of Turkey (revised).png|thumb|upright=1.6|Motorways in Turkey]]
[[File:O1-TR sign.svg|50px|left]]

[[Otoyol|Motorways]] ({{langx|tr|Otoyol}}) of [[Turkey]] are a network in constant development. All motorways (O coded), except beltways, are toll roads (using only [[RFID]] methods for the roads that operated by [[General Directorate of Highways (Turkey)|KGM]]; cash and credit card payment is also possible for the roads that operated by private companies), mostly six lanes wide, illuminated and with {{cvt|130 or 140|km/h|mph}} speed limit. As of 2024, total length of the motorways is {{cvt|3726|km|mi}} long in total.<ref>{{cite web|title=YILLAR İTİBARIYLA YAPIMI TAMAMLANMIŞ OTOYOLLAR (MART 2022) |url=https://www.kgm.gov.tr/SiteCollectionDocuments/KGMdocuments/Istatistikler/OtoyolEnvanterBilgisi/Yillara%C4%B0tibariyleYapimiTamamlanmisOtoyollar.pdf |website=Kgm.gov.tr|access-date=26 March 2022|language=tr}}</ref>

<gallery mode="packed" heights="150" widths="300">
File:Turkish state road D 750.JPG|[[State road D.750 (Turkey)|D.750]] at [[Konya Province|Konya]] junction. [[Toros Mountains]] in the background.
File:ORHANGAZİ KAVŞAĞI-min.jpg|Orhangazi Junction in Bursa, O-5
</gallery>

====United Kingdom====
{{Main|List of motorways in the United Kingdom|Roads in the United Kingdom}}
[[File:UK motorway symbol.svg|left|50px]]
[[File:UK motorways map 2022.svg|thumb|upright=1.2|Motorways of the United Kingdom]]
[[File:UK-Motorway-M1.svg|left|50px]]

=====Great Britain=====
[[File:M25 Motorway Clockwise. Approaching Junction 14 For A3113 For Heathrow - geograph.org.uk - 1280493.jpg|thumb|The [[M25 Motorway]] near Heathrow Airport]]

A map ''Showing Future Pattern of Principal National Routes'' was issued by the [[Ministry of War Transport]] in 1946<ref>{{cite web |url = http://www.nce.co.uk/a-new-way-to-travel/1938402.article |title = A New Way to Travel |date = December 2008 |url-status = live |archive-url = https://web.archive.org/web/20111124134802/http://www.nce.co.uk/a-new-way-to-travel/1938402.article |archive-date = 24 November 2011 }}</ref> shortly before the law that allowed roads to be restricted to specified classes of vehicle (the [[Special Roads Act 1949]]) was passed.<ref>{{cite web |url = http://www.opsi.gov.uk/acts/acts1949/pdf/ukpga_19490032_en.pdf |title = Special Roads Act 1949 |publisher = Office of Public Sector Information |access-date = 31 December 2007 |url-status = live |archive-url = https://web.archive.org/web/20080229031552/http://www.opsi.gov.uk/acts/acts1949/pdf/ukpga_19490032_en.pdf |archive-date = 29 February 2008 }}</ref> The first section of motorway, the [[M6 motorway|M6 Preston Bypass]], opened in 1958<ref name="mastats">{{cite web |url = http://www.iht.org/motorway/stats.htm |title = Statistics |work = Motorway Archive |publisher = The Motorway Archive Trust |access-date = 18 November 2007 |url-status = dead |archive-url = https://web.archive.org/web/20071003202023/http://www.iht.org/motorway/stats.htm |archive-date = 3 October 2007 }}</ref> followed by the first major section of motorway (the [[M1 motorway|M1]] between [[Crick, Northamptonshire|Crick]] and Berrygrove in [[Watford]]), which opened in 1959.<ref name="mastats" /> From then until the 1980s, motorways opened at frequent intervals;<ref>{{cite web |url = http://www.iht.org/motorway/openings.htm |title = Opening dates for Motorways in the UK in chronological order |work = Motorway Archive |publisher = The Motorway Archive Trust |access-date = 18 November 2007 |url-status = dead |archive-url = https://web.archive.org/web/20081202063942/http://www.iht.org/motorway/openings.htm |archive-date = 2 December 2008 }}</ref> by 1972 the first {{cvt|1000|mi|km|sigfig=2|order=flip}} of motorway had been built.<ref>{{cite book |first2=Ron |last2= Bridle |first1=John |last1=Porter |name-list-style= amp |title=The Motorway Achievement |year=2002 |publisher=Thomas Telford |isbn=978-0-7277-3196-8 |page=223 |quote=<!--...the construction industry was commissioned, in sequences of contracts spread over the years, to build {{cvt|1,000|mi|km}} of new motorway and duly so by 1972...-->}}</ref>

While roads outside of urban areas continued to be built throughout the 1970s, opposition to urban routes became more pronounced. Most notably, plans by the [[Greater London Council]] for a series of [[London Ringways|ringways]] were cancelled following extensive [[Road protest in the United Kingdom|road protests]] and a rise in costs.{{citation needed|date=September 2024}} In 1986 the single-ring, [[M25 motorway]] was completed as a compromise.<ref>{{cite web |url = http://www.iht.org/motorway/m25j13j30.htm |title = M25 London Orbital Motorway (Junctions 13 to 30) |work = Motorway Archive |publisher = The Motorway Archive Trust |access-date = 31 December 2007 |url-status = dead |archive-url = https://web.archive.org/web/20081222222234/http://www.iht.org/motorway/m25j13j30.htm |archive-date = 22 December 2008 }}</ref> In 1996 the total length of motorways reached {{convert|2,000|mi||sigfig=2|order=flip}}.<ref>{{cite book |first2= Ron |last2= Bridle |first1=John |last1=Porter |name-list-style= amp |title=The Motorway Achievement |year=2002 |publisher=Thomas Telford |isbn=978-0-7277-3196-8 |page=189 |quote=<!--With {{cvt|2,000|mi|km}} of motorway completed and in operation by 1996...-->}}</ref>

Motorways in Great Britain, as in numerous European countries, will nearly always have the following characteristics:

# No traffic lights (except occasionally on slip roads before reaching the main carriageway).
# Exit is nearly always via a numbered junction and slip road, with rare minor exceptions.
# Pedestrians, cyclists and vehicles below a specified engine size are banned.
# There is a central reservation separating traffic flowing in opposing directions (the only exception to this is the A38(M) in [[Birmingham]] where the central reservation is replaced by another lane in which the direction of traffic changes depending on the time of day. There was another small spur motorway near [[Manchester]] with no solid central reservation, but this was declassified as a motorway in the 2000s.)
# No at grade junctions.

On motorways in Great Britain there were 99 fatalities in 2017 for 69&nbsp;billion vehicle miles travelled, a reduction from 183 fatalities in 2007.<ref>{{cite web |url=https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/744077/reported-road-casualties-annual-report-2017.pdf |title=Reported road casualties in Great Britain: 2017 annual report |publisher=Department for Transport |date=27 September 2018 |access-date=1 September 2021 |url-status=live|archive-url=https://web.archive.org/web/20181110160046/https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/744077/reported-road-casualties-annual-report-2017.pdf |archive-date=10 November 2018 }}</ref> which is equivalent to 1.43 fatalities per billion vehicle miles travelled.

=====Northern Ireland=====
Legal authority existed in the [[Special Roads Act (Northern Ireland) 1963]] similar to that in the 1949 Act.<ref>{{cite web |url = http://www.iht.org/motorway/niconcept.htm |title = Conceptions and early history of the motorways in Northern Ireland |work = Motorway Archive |publisher = The Motorway Archive Trust |access-date = 31 December 2007 |url-status = dead |archive-url = https://web.archive.org/web/20071011160647/http://www.iht.org/motorway/niconcept.htm |archive-date = 11 October 2007 }}</ref> The first motorway to open was the [[M1 motorway (Northern Ireland)|M1 motorway]], though it did so under temporary powers until the Special Roads Act had been passed.<ref>{{cite web |url = http://www.iht.org/motorway/m1ni.htm |title = M1 Belfast to Dungannon and M12 to Craigavon |work = Motorway Archive |publisher = The Motorway Archive Trust |access-date = 31 December 2007 |url-status = dead |archive-url = https://web.archive.org/web/20071009142931/http://www.iht.org/motorway/m1ni.htm |archive-date = 9 October 2007 }}</ref> Work on the motorways continued until the 1970s when the [[1973 oil crisis|oil crisis]] and [[The Troubles]] both intervened causing the abandonment of many schemes.<ref>{{cite web |url = http://www.iht.org/motorway/wlink.htm |title = Westlink (M1 to M2) |work = Motorway Archive |publisher = The Motorway Archive Trust |access-date = 31 December 2007 |url-status = dead |archive-url = https://web.archive.org/web/20071013213820/http://www.iht.org/motorway/wlink.htm |archive-date = 13 October 2007 }}</ref>
{{clear}}

===Oceania===

====Australia====
{{Main|Freeways in Australia|Highways in Australia}}
[[File:AUS Alphanumeric Route M1.svg|left|50px]]
[[File:Australian national highway 1.svg|left|50px]]

[[Australia]]'s major cities, [[Sydney]], [[Melbourne]], [[Brisbane]], [[Perth]], and [[Adelaide]] feature a network of freeways within their urban areas, while [[Canberra]], [[Hobart]], [[Darwin, Northern Territory|Darwin]], and the regional centres of [[Newcastle, New South Wales|Newcastle]], [[Geelong]], [[Gold Coast, Queensland|Gold Coast]] and [[Wollongong]] feature a selection of limited-access routes. Outside these areas traffic volumes do not generally demand freeway-standard access, although heavily trafficked regional corridors such as Sydney–Newcastle ([[Pacific Motorway (Sydney-Newcastle)|M1 Pacific Motorway (F3)]]), Sydney–Wollongong ([[Princes Motorway|M1 Princes Motorway (F6)]]), Brisbane–Gold Coast (M1 [[Pacific Motorway (Brisbane-Brunswick Heads)|Pacific Motorway]]), Melbourne–Geelong (M1 [[Princes Freeway]]), Perth-Mandurah (SR2 [[Kwinana Freeway]]) and that form part of major long-distance routes feature high-standard freeway links.

The M31 [[Hume Highway|Hume Highway/Freeway/Motorway]] connecting [[Sydney]] and [[Melbourne]], the M23 [[Federal Highway, Australia|Federal Highway]] spur route that connects [[Canberra]] with [[Sydney]] and the A1/M1 [[Pacific Highway, Australia|Pacific Highway/Motorway]] connecting [[Sydney]] and [[Brisbane]] are the only major interstate highways that are completed to a continuous dual carriageway standard. There are also plans to upgrade the A25 [[Barton Highway]], another spur off the M31 that connects [[Canberra]] with [[Melbourne]], to a dual carriageway highway. Although these inter-city highways are dual carriageway they are not all controlled access highways. Some of these inter-city highways have driveways to adjacent property and at-grade junctions with smaller roads.

Unlike many other countries, some of Australia's freeways are being opened to cyclists. As the respective state governments upgrade their state's freeways, bicycle lanes are being added and/or [[shoulder (road)|shoulders]] widened alongside the freeways. The state of Queensland is an exception however, as cyclists are banned from all freeways, including the breakdown lane.

Motorways referred to as an expressway in Australia include the [[Hunter Expressway]], which connects the [[Hunter Valley]] with [[Newcastle, New South Wales|Newcastle]], and the [[Southern Expressway, Adelaide|Southern Expressway]], which connects Adelaide's outer southern suburbs to the southwestern suburbs.

<gallery mode="packed" heights="150">
File:Tuggeranong Parkway.jpg|Aerial view of [[Tuggeranong Parkway]] in the [[Australian Capital Territory]]
File:Deer Park Bypass eastbound at Western Ring Road.jpg|Deer Park Bypass on the [[Western Freeway, Victoria|Western Freeway]]
File:Tasman-hwy-warrane.jpg|The [[Tasman Highway]] in [[Tasmania]]
File:Mooney Mooney Bridge, Sydney-Newcastle Fwy..JPG|The [[Pacific Motorway (Sydney-Newcastle)|M1 Pacific Motorway]] is the major road transport link between the cities of [[Sydney]] and [[Brisbane]].
</gallery>

====New Zealand====
{{Main|List of motorways and expressways in New Zealand}}
[[File:New Zealand road sign A41-1.svg|left|50px]]
[[File:State Highway 1 NZ.svg|left|50px]]

The term ''motorway'' in [[New Zealand]] encompasses multilane divided freeways as well as narrower two- to four-lane undivided [[Limited-access road|expressways]] with varying degrees of [[grade separation]]; the term ''motorway'' describes the legal traffic restrictions rather than the type of road.<ref name="motsam">{{cite book |title = Manual of Traffic Signs and Markings (MOTSAM) |chapter = Part 3: Motorways and Expressways |publisher = [[NZ Transport Agency]] |date = June 2009 }}</ref>

New Zealand's motorway network is small due to the nation's low population density and low traffic volumes making it uneconomical to build controlled-access highways outside the major urban centres.

New Zealand's first motorway opened in December 1950 near [[Wellington]], running from [[Johnsonville, New Zealand|Johnsonville]] to [[Tawa, New Zealand|Tawa]]. This {{convert|5|km|mi|adj=on|spell=in}} motorway now forms the southern part of the [[Johnsonville-Porirua Motorway]] and part of [[New Zealand State Highway 1|State Highway 1]].<ref>{{cite web |publisher = Transit New Zealand |title = FAQs |url = http://www.transit.govt.nz/about/faqs.jsp#8 |access-date = 21 March 2007 |url-status = dead |archive-url = https://web.archive.org/web/20080619023335/http://www.transit.govt.nz/about/faqs.jsp#8 |archive-date = 19 June 2008 |df = dmy-all }}</ref> Auckland's first stretch of motorway was opened in 1953 between Ellerslie and Mount Wellington (between present-day exit 435 and exit 438), and now forms part of the [[Auckland Southern Motorway|Southern Motorway]].<ref>{{cite web |title = CMI Transit |url = http://cmi.transit.govt.nz/html/cmi/history.htm |access-date = 7 June 2007 |url-status = dead |archive-url = https://web.archive.org/web/20080222044116/http://cmi.transit.govt.nz/html/cmi/history.htm |archive-date = 22 February 2008 }}</ref>

Most major urban areas in New Zealand feature limited-access highways. [[Auckland]], [[Wellington]], [[Christchurch]], [[Hamilton, New Zealand|Hamilton]], [[Tauranga]], and [[Dunedin]] contain motorways, with only Auckland having a substantial motorway network.

==See also==
{{Portal|Roads|U.S. Roads}}
* [[List of controlled-access highway systems]]
* [[Autobahn]]
* [[Autoroute (disambiguation)|Autoroute]]
* [[Autostrade]]

==Notes==
{{reflist|group=lower-alpha}}

==References==
{{reflist}}

==External links==
* {{commons category-inline|Controlled-access highways}}

{{Road types}}
{{Authority control}}

{{DEFAULTSORT:Controlled-Access Highway}}
[[Category:Controlled-access highways| ]]
[[Category:Types of roads]]