View source for Enterprise (train service)

{{Short description|Train service between Dublin, Ireland, and Belfast, Northern Ireland}}
{{distinguish|Enterprise Ireland}}
{{Italic title}}
{{EngvarB|date=January 2024}}
{{Use dmy dates|date=January 2024}}
{{Infobox rail company
|name= ''Enterprise''
|logo= Enterprise_train_logo.svg
|logo_size= 200px
|image= New Enterprise at Moira.JPG
|image_size= 300px
|caption= Locomotive 206 passes Moira en route to Dublin Connolly
|franchise= Not subject to franchising (1997 - present)
|nameforarea= station
|regions= {{rws|Dublin Connolly}},<br/> [[Belfast Grand Central Station|Belfast Grand Central]]
|secregions={{rws|Drogheda MacBride}}, {{rws|Dundalk Clarke}}, {{rws|Newry}}, {{rws|Portadown}}. {{rws|Lurgan}} and {{rws|Lisburn}} (09:00 ex Belfast, Sunday only)
|fleet= Eight [[IE 201 Class|201 Class]] locomotives<br/>Twenty eight [[Coaching stock of Ireland#De Dietrich (1997–present)|De Dietrich]] carriages<br/>Four [[Coaching stock of Ireland#Mark 3 (1984–2009)|Mark 3]] generator vans
|abbr=
|stations= 8
|website= 
|map = {{Dublin-Belfast railway line|inline=1}} 
|operator=[[Iarnród Éireann]]/<br/>[[Northern Ireland Railways]]|routekm=181km}}
'''Enterprise''' is the cross-border inter-city train service between {{rws|Dublin Connolly}} in the [[Republic of Ireland]] and [[Belfast Grand Central Station|Belfast Grand Central]] in [[Northern Ireland]], jointly operated by [[Iarnród Éireann]] (IÉ) and [[NI Railways]] (NIR). It operates on the [[Belfast–Dublin railway line]].

==History==
The [[Great Northern Railway (Ireland) ]] (GNR(I)) introduced the service as the "Enterprise Express" on Monday 11 August 1947 in an attempt to compete with air and road transport which were challenging the railways. 

The inaugural service was hauled by GNR (I) Steam Locomotive No.83 "''Eagle.''" This name would later appear on [[NI Railways|NIR]] [[NIR 101 Class|Diesel Electric locomotive No. 101.]]<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

Billed as a prestige service, this allowed many of the intermediate stops between the two cities to be cut out reducing the journey time from around 3 hours 45 minutes to 2 hours 15 minutes which aided business travel, which even today, remains an important market. 

[[Border checkpoint|Customs checks]] were limited to the Belfast and Dublin terminals, instead of lengthy stops at [[Goraghwood railway station|Goraghwood]] and [[Dundalk]], so as to reduce journey times by ensuring that journeys were non-stop. Another innovation saw the introduction of advance ticket booking.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref>  

The name of the train comes from the "enterprising" approach that the GNR(I) took to make journeys more convenient for passengers despite the requirement for customs checks.{{Citation needed|date=February 2010}} The initial service ran between {{rws|Belfast Great Victoria Street}} and Dublin Amiens Street Junction (renamed {{rws|Dublin Connolly}} in 1966). Locomotives of [[GNRI Class V]] were initially used, followed in 1948, by [[GNRI Class VS]].<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

A special train of Great Northern's most modern coaches was made up for the ''Enterprise.'' Normally this would consist of seven coaches, but this could be increased to ten during busy summer months. The 2 hour 15 minute timing allowed for this load and included provision for some delays en-route, such as temporary speed restrictions for track repairs.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

In comparison to the ''Enterprise'' service, the GNR (I) timetable for the Dublin - Belfast link in 1932 allocated 2 hours 2 minutes running time, equivalent to 1 hour 55 minutes non-stop, but station stops brought the overall end-to-end timing to 2 hours 25 minutes.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 
[[File:Steam Train approaching Peter's Bridge - geograph.org.uk - 344126.jpg|thumb|left|GNR (I) Class V "''Merlin''" which was one of the original locomotives tasked with hauling the ''Enterprise'' service.]]
For the first year of operation the "''Enterprise,''" consisted of only one train in each direction. This comprised a 10:30 departure from Belfast, returning at 17:30 from Dublin, and was hauled by one or other of the [[GNRI Class V]] [[4-4-0]] Compound Locomotives Nos. 83 - 87, named respectively; ''Eagle'', ''Falcon'', ''Merlin'', ''Peregrine'' and ''Kestrel'', after [[birds of prey]]. Painted in GNR (I)'s colour scheme of sky-blue and [[vermillion]], they were affectionately  [[nickname]]d the "''Bluebirds''."<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

In May 1948, a second train was brought into the schedule, giving a morning service at 09:30 from Dublin, returning from Belfast at 17:15. Towards the end of 1948 five new locomotives, specially built for the ''Enterprise,'' took over the service. These were [[GNRI Class VS]] 4-4-0 Nos. 206 - 210, named; ''[[River Liffey|Liffey]],'' ''[[River Boyne|Boyne]],'' ''[[River Lagan|Lagan]],'' ''[[River Foyle|Foyle]]'' and ''[[River Erne|Erne]],'' after rivers which crossed the railway network.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

The next development took place in 1950, when new [[Associated Equipment Company|AEC]] / [[Park Royal Vehicles]] [[GNRI AEC Class|Diesel Mechanical Railcars]] were introduced on the Dublin-based train. This train, however, had to be restricted to four coaches - one of the limitations of these particular units. They did have the distinction, however, of being the first successful mainline diesel railcars in the [[British Isles]].<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 
[[File:BUT railcar, Lisburn - geograph.org.uk - 1442604.jpg|thumb|left|B.U.T. railcars became a common sight on the ''Enterprise'' service during the 1950s.]]
In October 1950, in conjunction with [[CIÉ]], the service was extended to Glanmire Road station (renamed to [[Cork Kent railway station|Cork Kent]] in 1966) in [[Cork Kent railway station|Cork]]. Two sets of coaches were used, one GNR (I) and one CIÉ, working Belfast - Dublin - Cork and Cork - Dublin - Belfast on alternative days. The GNR (I) locomotives were used between Belfast and Dublin, and CIÉ steam locomotives between Dublin (Amiens Street) and Cork. The extended service saw the southbound train operating a journey time of 6 hours 45 minutes and the northbound train running a schedule of 6 hours 15 minutes.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

However this proved unsuccessful, in part due to the considerable journey time. The service lasted until June 1953 although a through coach to Cork was still conveyed on the ''Enterprise'' until September 1953.<ref>{{cite book |last=Rowledge |first=J.W.P. |year=1995 |title=Ireland |series=A Regional History of Railways |volume=XVI |location=Penryn |publisher=Atlantic Books |isbn=0-906899-63-X}}</ref> 

In October 1953 the governments of the Republic of Ireland and Northern Ireland nationalised the GNR as the Great Northern Railway Board (GNRB).<ref>{{cite book |last=Rowledge |first=J.W.P. |year=1995 |title=Ireland |series=A Regional History of Railways |volume=XVI |location=Penryn |publisher=Atlantic Books |isbn=0-906899-63-X}}</ref> The GNRB ordered new diesel-mechanical railcars of a more powerful design, which by using intermediate power cars with half-cabs and gangway ends, were capable of operating in sets of up to 8 coaches. Referred to as [[GNRI BUT Class|B.U.T. railcars]], due to their design by [[British United Traction]], they were introduced on the Belfast-based train in 1957 and the Dublin-based train in 1958, enabling timings to be reduced to 2 hours 10 minutes, and ending steam traction on ''Enterprise.''<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

On 1 October 1958 the GNRB was dissolved and its assets and liabilities were split between [[CIÉ|Córas Iompair Éireann]] (CIÉ) and the [[Ulster Transport Authority]] (UTA) — the predecessors of Iarnród Éireann (IÉ) and Northern Ireland Railways (NIR) respectively. In 1960, the first intermediate stop was introduced, when the 17:30 (ex) Dublin began to call at [[Dundalk railway station|Dundalk]] to pick up passengers for Belfast.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

The Dublin-based train reverted to locomotive haulage in 1962, when the first of CIÉ's new [[General Motors|Electro-Motive Diesel]] [[CIÉ 141 Class|141 Class]] locomotives were introduced.

April 1965 saw the ''Enterprise'' service upgraded to four trains each way per day - each set making two round trips. This gave services at 08:00, 11:30, 14:00 and 17:30 from Belfast, and 08:30, 11:00, 14:30 and 17:30 from Dublin. The number of ordinary stopping trains on the route was severely cut at the same time, in order to make the new express schedule work, and several additional stops at [[Portadown railway station|Portadown]] and [[Dundalk railway station|Dundalk]] were made by the ''Enterprise'' services to replace these local trains.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

[[Northern Ireland Railways]] came into existence in 1967, and shortly afterwards a complete new train was ordered for the NIR operated service. This was a radical advance on the [[GNRI BUT Class|B.U.T. railcars]], and comprised Diesel-Electric main line locomotives and a train of eight [[British Rail|BR]] MkIIb coaches, identical to the latest type entering service on [[British Railways]], with suitable modification for the [[5 ft 3 in gauge railways|Irish Standard Gauge]]. [[File:101 NIR enterprise service - dublin - 15-09-1980.jpg|thumb|left|An NIR "''Hunslet''" which was the mainstay of ''Enterprise'' operations from Belfast during the 1970s.]]
Three [[NIR 101 Class|NIR 101 Class locomotives]] were built; Nos. 101 - 103, appropriately named ''Eagle,'' ''Falcon'' and ''Merlin'' after their GNR predecessors. These locomotives were of the [[Bo-Bo|Bo-Bo wheel arrangement]] and produced 1,350 [[horsepower]]. The trains were designed to work in a push-pull formation, with driving trailers, or with a locomotive at each end. The locomotives were designed by the [[Hunslet Engine Company]], [[Leeds]], and assembled at [[Doncaster Works|BR's Doncaster Works]]. This gave rise to the locomotives being fondly referred to as the ''Hunslets.''<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

In 1972 CIÉ introduced BR MkIIe air-conditioned coaches on their train, bringing the standard into line with the NIR set. Further coaches were acquired by NIR, enabling the ''Enterprise'' to be made up to twelve coaches and two locomotives when required.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

The Belfast Central Railway was re-opened in 1976 following the completion of the Belfast Central Line Project, which involved the relaying of track along the route of the former line, and this saw the [[Belfast]] [[Train station#Terminus|Terminus]] moved to the newly constructed [[Belfast Central Station]] in April of that year. The new station was named after the former railway and was located some distance from Belfast City Centre, adjacent to the city's markets. (The name was a source of confusion to tourists and was eventually renamed to {{stnlink|Lanyon Place||Belfast Lanyon Place}} in 2018).{{fact|date=January 2023}}

The year 1976 also saw Northern Ireland customs examination moved to [[Portadown]], the Republic's having been moved to [[Dundalk railway station|Dundalk]] a few years previously. This necessitated a further five minutes of allotted time for northbound trains. Also in 1977 regular stops at [[Drogheda]] became a feature of ''Enterprise''. To enable the same overall timings to be maintained faster and more powerful [[CIÉ 181 Class]] locomotives replaced the older [[CIÉ 141 Class|141 Class]] on the schedule.<ref name = IRRS-GNRI>{{cite web | url = http://www.irrs.ie/Common%20Files/GNRI.htm | title = Irish Railways: 1946 - 1996. Great Northern Railway (Ireland) | year = 2001 | publisher = Irish Railway Record Society | access-date = 23 January 2018 | archive-date = 14 May 2006 | archive-url = https://web.archive.org/web/20060514150418/http://www.irrs.ie/Common%20Files/GNRI.htm | url-status = live }}</ref> 

The service was upgraded in September 1997 with a new timetable and new coaching stock from French train makers [[De Dietrich Ferroviaire]] (now Alstom DDF). At this point the service, which had operated under either the IÉ or NIR brands, was branded separately as Enterprise.{{fact|date=January 2023}}

From the early 1970s until the late 1990s the service has suffered disruption, as a consequence of [[the Troubles]], when it was regularly halted by bomb threats. These became so frequent and caused such considerable disruption to the service that a campaigning group, the [[Peace Train Organisation]] was formed in 1989. Since the [[Northern Ireland peace process]] however, such disruption has diminished. Renewed investment in recent years has seen the line upgraded to continuously welded track capable of {{convert|145|km/h|abbr=on}} running along the southern part of the route, as part of Iarnród Éireann's rail network upgrades. The Northern Ireland section of the line was also upgraded to 90&nbsp;mph running on many sections of the line.{{fact|date=January 2023}}

Today the journey times vary between 2 hours 5 minutes (with four intermediate stops) and 2 hours 20 minutes (with six intermediate stops),<ref>{{Cite web |url=http://www.translink.co.uk/Documents/timetables/spring%202016/Enterprise%20Dublin%20-%20Belfast.pdf |title=NIR Enterprise timetable, effective 01/05/17 |access-date=23 July 2017|archiveurl=https://web.archive.org/web/20170808212355/http://www.translink.co.uk/Documents/timetables/spring%202016/Enterprise%20Dublin%20-%20Belfast.pdf |archive-date=8 August 2017 |url-status=dead }}</ref> with an average speed of {{convert|93|and|84|km/h|abbr=on}} respectively.

The [[Railway Preservation Society of Ireland]] runs a steam Enterprise in the summer months to exchange its Dublin-based engine with its Whitehead-based engine.

===Autumn 2009 disruption===
On Friday 21 August 2009 {{convert|20|m|yd|abbr=on}} of the [[Broadmeadow viaduct|Broadmeadow estuary viaduct]], north of Malahide, collapsed, causing serious disruptions to Enterprise services. During the disruption the Enterprise operated between Belfast Central and Drogheda, with buses connecting Drogheda with Dublin Connolly. The line reopened on Monday 16 November with full services resumed.

===Mid-life refurbishment===
The Enterprise underwent a face-lift during between November 2007 and early 2009, with the carriages being resprayed in silver with green livery, some of which could be seen at Translink's York Road Maintenance Depot.

In 2014, a mid-life refurbishment programme was announced for the Enterprise service.<ref>{{Cite web|url = http://www.translink.co.uk/Services/Enterprise/enterprise-refurbishment-programme/|title = Translink NI|access-date = 13 November 2014|website = Translink NI|archive-url = https://web.archive.org/web/20141113190801/http://www.translink.co.uk/Services/Enterprise/enterprise-refurbishment-programme/|archive-date = 13 November 2014|url-status = dead}}</ref> Rotating refurbishment involved substituting non-Enterprise trainsets on an individual basis which began in November 2014 with 5-car IÉ 22000 Class Trains Numbered 22036-22039 working the 07:35, 10:35, 13:20, 16:05, 19:00 and 21:35 (retimed 21:15 in June 2015) with a return to service of the first revamped coaches in November 2015. Refurbishment provided new mechanical running gear, in coach electronics and modernised interiors. The first refurbished set, consisting of DVT 9002 and Locomotive 206, operated a trial service from York Road Depot in Belfast to Dublin Connolly and back, on Thursday 15 October 2015 departing York Road at 10:27 and departing Dublin at 13:05. The same set operated its first official passenger service after its refurbishment on Monday 16 November 2015 working the 08:00 Belfast Central (now Lanyon Place) to Dublin Connolly. The first set: 9002 entered service on Monday 16 November 2015, 9001 then entered service on 5 February 2016, working the 18:05 Belfast Central to Dublin Connolly, 9003 entered service on 1 April 2016 working the 08:00 Belfast to Dublin, and 9004 entered service on 20 June 2016, By the time the first 3 DD Sets were in service, The refurbishment was officially completed on Sunday 10 April 2016, to coincide with the introduction of an enhanced Enterprise timetable. From Sunday 10 April 2016, the following changes occurred: 06:50 Belfast to Dublin was retimed 06:45. 09:35 Dublin to Belfast was retimed 09:30. 11:00 Dublin to Belfast was retimed 11:20. Also from Monday 11 April 2016 onwards, the 21:15 Belfast to Dublin was withdrawn and replaced by the 20:05 Belfast to Dublin.

During the COVID-19 lockdown in 2020 & 2021, the Enterprise sets were withdrawn temporarily due to low passenger numbers which resulted in NIR 3000 Class and Irish Rail 22000 Class DMUs. This was in place until 24 July 2020 and 12 April 2021.

On the afternoon on 18 February 2024, IE 201 Class loco 206 and DVT 9001 visited Great Victoria Street for gauging purposes.

Over the weekend of 2-3 March 2024, all Enterprise services were diverted to Belfast Great Victoria Street due to engineering works.

==Services==
Passengers can travel "'''First Plus'''" or "'''Enterprise Class'''". Additional to a trolley service there is a "Café Bar" serving alcohol, soft drinks, tea & coffee and hot and cold snacks.  The seating in the Cafe Bar is the same as the other rail seats, with the same tables.

First Plus comes with more leg room, reclining seats, tinted windows with blinds, complementary newspapers (on most services the two main Belfast papers but on occasion the Irish Independent and Irish Times are available).
Food is available for purchase in First Plus with a full three-course menu serving breakfast (before 12pm), lunch and dinner (after 12pm). Tea and Coffee from this menu come with complementary refills. First Plus is also significantly quieter as it is rare for either First Plus carriage to be full to capacity. A member of the train crew checks passengers tickets at the door to the First Plus carriages, since many people are unaware there are two classes of carriage on the train.

Both classes have air conditioning vents designed into the rim of the window frames and free WiFi supplied by NI Railways.  The WiFi is limited to 150MB of data each day per device.  A glass display is atop the door of every carriage showing an analogue clock face with the current time, the destination station, the next station, and any other information may be scrolled down the bottom of the display.  Approximately 3 minutes from every stop the computer will announce ''"we are now approaching (station name)"'' to give passengers enough time to gather their belongings before disembarking. Since the Enterprise brand aims to be politically neutral, there are no Irish Rail or NI Railways logos inside or outside the train (with the exception of the alcohol consumption policy poster, which includes the logos of both operators), only Enterprise specific branding, all announcements are made only in English and not in Irish, and all items available for purchase are dual priced in pounds sterling as well as in euro. Payments made by card are charged in sterling.{{citation needed|date=September 2017}} Both classes include dedicated areas for wheelchair users.

==Rolling stock==

===Current fleet===
[[File:Dublin belfast enterprise at dublin.jpg|thumb|Enterprise Control Car 9001 stands at [[Connolly station|Dublin Connolly]]]]
Each [[push-pull train]]set consists of seven coaches and a [[IE 201 Class|201 Class]] locomotive. The 28 carriages were delivered as four sets of seven but entered service as three sets of eight, with two locomotives from each operator. The [[Coaching stock of Ireland#De Dietrich Stock (in use)|coaches]] were manufactured by [[De Dietrich Ferroviaire]], while the locomotives are from [[Electro-Motive Diesel|GM-EMD]]; ownership of the rolling stock is shared between both operators, with carriage maintenance by NIR and locomotives maintained by IÉ.<ref>World Update Update ''[[Railway Age]]'' October 1994 page 68</ref> The coaching stock is based on the [[British Rail Class 373|Class 373]] [[Eurostar]] stock, with the interiors identical to the pre-overhaul Eurostar interior. The Eurostar stock is articulated and permanently coupled, while the Enterprise is ordinary coaching stock.

[[File:Dublin belfast enterprise.jpg|thumb|right|The interior of a First Plus carriage, built to a similar design and specification as [[Eurostar]]'s rolling stock]]

The service had suffered from a lack of reliability of the locomotives, which provide [[head end power]] to the train. Unlike IÉ's Dublin-Cork services, which operate with the locomotive operating with a [[control car (rail)|generator control car]] that provides power for lighting and heating the train, the Enterprise fleet was only equipped with an ordinary control car, which had no power generating capability. This meant that the locomotive had to provide all the power for the train, both motive and generating. Extended operation in this mode caused damage, so four further locomotives were allocated to Enterprise from the IÉ fleet. However, this still required locomotives to be used in HEP mode, so in May 2009 the Minister for Regional Development in Northern Ireland requested an estimate for the provision of generator functions for the existing rolling stock so that head-end power mode would no longer be needed.<ref name="NI News 170">{{Cite web |url=http://www.irrs.ie/Journal%20170/170%20News%20NIR.htm |title=IRRS Journal 170 |access-date=3 November 2009 |archive-date=24 February 2012 |archive-url=https://web.archive.org/web/20120224203313/http://www.irrs.ie/Journal%20170/170%20News%20NIR.htm |url-status=live }}</ref>

In order to avoid further problems, a modified [[Coaching stock of Ireland#Mark 3 (1984–2009)|Mark 3]] Generator van, formerly 7604, was introduced on Monday 10 September 2012. Three further such generator vans have since entered service.

{| class="wikitable"
|----- bgcolor=#f9f9f9
! rowspan="2" |&nbsp;Class&nbsp;
! rowspan="2" |Image
! rowspan="2" |&nbsp;Type&nbsp;
! colspan="2" |&nbsp;Top speed&nbsp;
! rowspan="2" |&nbsp;Number&nbsp;
! rowspan="2" |&nbsp;Built&nbsp;
|----- bgcolor=#f9f9f9
!&nbsp;mph&nbsp;
!&nbsp;km/h&nbsp;
|-
|[[IE 201 Class|201 Class]]
|[[File:Belfast Central (2).jpg|Belfast Central (2)|100px]]
|[[Diesel locomotive]]
|102
|164
|8
|1994–1995
|-
|[[Coaching stock of Ireland#De Dietrich (1997–present)|De Dietrich stock]]
|[[File:Belfast Central (1).jpg|Belfast Central (1)|100px]]
|[[Passenger]] [[Rolling stock|coaches]]
|90
|145
|28
|1996
|-
|[[Coaching stock of Ireland#Mark 3 (1984–2009)|Mark 3]]
|[[File:Belfast Central (3).JPG|Belfast Central (3)|100px]]
|[[Head-end power|Generator van]]
|100
|160
|4
|1980<br/>(Refurbished 2009)
|}

If an Enterprise set is unavailable, either a NIR or an IÉ set can be used.  Both NIR and IÉ have equipped six each of their newest DMUs ([[NIR Class 3000|3000]] and [[IE 29000 Class|29000]]) and ten [[IE 22000 Class|22000 Class]] DMUs to each other's specifications so they may be used in the event of a breakdown.

===Formation===
[[File:Train Smoke - geograph.org.uk - 485110.jpg|thumb|Smoke coming out of an exhaust pipe of an Enterprise locomotive idling at Belfast Central in 2007]]
[[File:Enterprise Boyne Viaduct.jpg|thumb|Enterprise heading North from Drogheda over the Boyne Viaduct.]]
The formation of the train is: DVT with First Plus, First Plus, buffet carriage, four standard carriages, a Mark 3 Generator Van and a 201 Class locomotive, with the locomotive at the Belfast end and the control car at the Dublin end.

;Driving Van Trailer First
All trains have a driving trailer, numbered 9001–9004, containing a driving cab, a luggage area and 29 First Plus seats. It weighs 42 tonnes and has a wheelchair space. The cab is only used for services from Belfast, as the locomotive goes south.

;Trailer First Plus
The second carriage in the Enterprise train set, numbered 9101–9104, is an additional First Plus coach with 47 seats (no wheelchair space or luggage area). It weighs 40 tonnes.

;Trailer Buffet
Next coach, numbered 9401–9404 is a buffet coach.

;Trailer Standard Disabled Space
Coach four, numbered 9213–9216, is standard class with a wheelchair space.

;Trailer Standard
Coaches five to seven, numbered 9201–9212, are standard class (no wheelchair space).

;Trailer Generator Van
Since 2012 electric power for the train is no longer delivered from the locomotive but from a separate [[generator van]]. Their final numbers are 9602, 9604, 9606 and 9608.

===Future fleet===
Both IÉ and NIR have an ambition to introduce hourly services, but it would be necessary to procure new, faster rolling stock to achieve the required improvements in frequency and speed. In 2005, they investigated procuring new rolling stock when seven {{convert|125|mph|abbr=on|sigfig=1}} capable [[British Rail Class 222|Class 222]] DEMUs built for the [[Rail transport in Great Britain|British network]] became available as one of the possible options, which also included the procurement of additional [[IE 22000 Class|22000 Class]] DMUs as part of IÉ's order.<ref>[http://www.irrs.ie/Journal%20157/157%20News%20NIR.htm IRRS Journal 157] {{webarchive |url=https://web.archive.org/web/20120208083903/http://www.irrs.ie/Journal%20157/157%20News%20NIR.htm |date=8 February 2012 }}</ref> New rolling stock would most likely be a [[multiple unit]] rather than locomotive-hauled, similar to IÉ's plans for Dublin-Cork services.

In 2024, an announcement was made that funding totalling €165m had been secured from multiple sources to procure new rolling stock for Enterprise. This new fleet will be formed of a total of eight new [[Electric multiple unit|battery-EMU]] sets, intended to use the current 1.5kV [[overhead lines]] (OHLE) that is in place between Dublin Connolly and {{stnlnk|Malahide}}, with battery power used for the rest of the route to [[Belfast Grand Central station|Belfast Grand Central]]. In the event that the remainder of the route to Belfast is electrified, the batteries would be removed and the trains run wholly using the OHLE. The procurement of twice the number of trains would additionally allow the service frequency to be increased to hourly, with the journey time reduced to less than two hours. With the order placed before the end of 2024, the new trains are intended to enter service by 2029.<ref>{{cite web |url=https://www.railwaygazette.com/traction-and-rolling-stock/dublin-belfast-electric-battery-trains-funded/66340.article |title=Dublin – Belfast electric-battery trains funded |author=<!--Not stated--> |date=12 April 2024 |website=Railway Gazette International |publisher= |access-date=20 April 2024 |quote=}}</ref>

==Future developments==
Press reports from 2007 have stated that NIR & IÉ plan to introduce a new hourly service.<ref>{{Cite news |url=http://www.irishtimes.com/newspaper/ireland/2007/0915/1189076434202.html |title=Irish Times, 15/09/07 |newspaper=[[The Irish Times]] |access-date=7 March 2009 |archive-date=10 November 2010 |archive-url=https://web.archive.org/web/20101110023316/http://www.irishtimes.com/newspaper/ireland/2007/0915/1189076434202.html |url-status=live }}</ref><ref>[http://www.dundalktoday.com/ViewArticle2.aspx?SectionID=3417&ArticleID=3114495 Dundalk Democrat, 15/08/07]{{Dead link|date=December 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>[http://www.dundalktoday.com/ViewArticle2.aspx?SectionID=3417&ArticleID=3215714 Dundalk Democrat, 19/09/07]{{Dead link|date=December 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> This was reiterated in a statement by [[Conor Murphy]], the then Northern Ireland Minister for Regional Development, who stated that the two companies had made a presentation to the [[North/South Ministerial Council]] in October 2007 putting forward the case for improvements in the frequency and speed of the service.<ref>[http://www.belfasttelegraph.co.uk/news/local-national/article3485053.ece Hourly train service to Dublin is now on track] {{Webarchive|url=https://web.archive.org/web/20080628080817/http://www.belfasttelegraph.co.uk/news/local-national/article3485053.ece |date=28 June 2008 }} – Belfast Telegraph, 03/03/08</ref>

Any improvements to the service would require significant investment in track and signalling, as well as new rolling stock. In April 2008, the then Minister for Regional Development stated that the major improvements to the infrastructure and rolling stock required by Enterprise would be in the region of £500 million.<ref>[http://news.bbc.co.uk/1/hi/northern_ireland/7325380.stm Top train 'needs £500m overhaul']</ref> However, the introduction of an hourly timetable remains an ambition for NIR and IÉ.<ref name="NI News 170"/>

The line south of the border was upgraded to [[continuous welded rail]] in the 1990s, while NIR has also made track improvements to allow an increase in speed.<ref>[http://www.translink.co.uk/capitalexpenditureplans.asp Translink Capital Expenditure Plans] {{Webarchive|url=https://web.archive.org/web/20080918100717/http://www.translink.co.uk/capitalexpenditureplans.asp |date=18 September 2008 }} – Translink</ref> Enterprise would require a minimum of seven trains to operate an hourly service – until 2013, IÉ had a significant number of stored [[British Rail Mark 3|Mark 3]] rolling stock available, of which five sets were push-pull capable.

However, all of IÉ's Mark 3 carriages were scrapped during 2013 and 2014. NIR also withdrew its [[British Rail Class 488|"Gatwick"]] set in June 2009 and it has been preserved by the RPSI. The introduction of the 22000 Class could potentially be used to enhance the frequency of the Enterprise which has led to a surplus of locomotives that could be utilised. The major issue remains the capacity at {{stnlnk|Dublin Connolly}}, which is stretched.<ref name="Modern Railways">{{cite journal |last1=Flanagan |first1=Colm |year=2010 |title=Optimism in Northern Ireland |journal=Modern Railways |volume=67 |issue=737 |pages=60–64 }}</ref>

In July 2024, as part of a set of major improvements to its national timetable, Iarnród Éireann announced that Enterprise would transition to an hourly frequency following the opening of [[Belfast Grand Central station|Belfast Grand Central]] in October 2024. The expanded service would operate from Monday–Saturday, and allow arrivals in both Belfast and Dublin before 9.00am. In order to meet the new service frequency from its launch, the existing Enterprise fleet is to be supplemented by a pair of [[IÉ 22000 Class|22000 Class]] units, and one double [[NIR Class 3000|Class 3000]] unit from [[NI Railways]], each of which will be six cars long. This is until the planned entry into service of the new fleet from 2029.<ref>{{cite web |url=https://www.railwaygazette.com/passenger/dublin-belfast-boost-in-irish-timetable-recast/66799.article |title=Dublin – Belfast boost in Irish timetable recast |author=<!--Not stated--> |date=1 July 2024 |website=Railway Gazette International |publisher=Railway Gazette |access-date=10 July 2024 |quote=}}</ref>

==Criticism==
In November 2007 the cross-border [[Irish Business and Employers Confederation|IBEC]]-[[Confederation of British Industry|CBI]] Joint Business Council, in a submission to the [[North/South Ministerial Council]], stated that Enterprise was falling behind compared to the improvements of other international rail providers, with delays "often up to an hour" and serious reliability problems and an uncompetitive journey time against making the journey by road.<ref>[http://www.belfasttelegraph.co.uk/business/article3207950.ece Belfast/Dublin rail link 'needs a radical upgrade'] {{Webarchive|url=https://web.archive.org/web/20080628080737/http://www.belfasttelegraph.co.uk/business/article3207950.ece |date=28 June 2008 }} – Belfast Telegraph, 29 November 2007</ref>

With the faster road journey to Dublin and the Enterprise's unreliability and infrequency, it has faced a loss of revenue as passengers switch to much cheaper and faster alternatives.<ref>[http://www.belfasttelegraph.co.uk/columnists/article3730593.ece Malachi O'Doherty: Free travel from Belfast to Dublin?] {{Webarchive|url=https://web.archive.org/web/20080628080742/http://www.belfasttelegraph.co.uk/columnists/article3730593.ece |date=28 June 2008 }} Belfast Telegraph 23 May 2008</ref><ref>[https://web.archive.org/web/20080628080742/http://www.belfasttelegraph.co.uk/columnists/article3730593.ece Wayback Machine capture] </ref>

==Gallery==
<gallery>
Image:Dublin_belfast_enterprise.jpg| The interior of a First Plus carriage.
Image:Enterprise Connolly.jpg|Enterprise Control Car 9002 at Dublin Connolly in 2007.
Image:Portadown railway station in 1972.jpg|A [[CIE 001 Class|001 Class]] locomotive powers an Enterprise service through [[Portadown railway station|Portadown]] in 1972.
Image:101 NIR enterprise service - dublin - 15-09-1980.jpg|A [[NIR 101 Class|101 Class]] locomotive with an Enterprise service arriving at Dublin Connolly in 1980.
File:Railway at Adelaide (2) - geograph.org.uk - 626601.jpg|A [[CIE 071 Class/NIR Class 111|111 Class]] hauling a rake of [[British Railways Mark 2|Mark 2]] carriages at [[Adelaide railway station, Northern Ireland|Adelaide]] in 1988.
File:Lambeg railway station in 2005.jpg|A [[IE 29000 Class|29000 Class DMU]] works an Enterprise service through Lambeg in 2005.
File:Railtour at Dublin - geograph.org.uk - 1750507.jpg|The Enterprise at Dublin Connolly next to a Railtour to [[Sligo]] in 2010.
File:Enterprise generator van Belfast.jpg|Enterprise Generator Van at Belfast Central in 2016.
</gallery>

==References==
{{reflist}}

==External links==
{{Commons category-inline|Enterprise (train service)}}
* [http://www.irishrail.ie/fares-and-tickets/dublin-belfast "Iarnród Éireann" page on the Enterprise]
* [https://web.archive.org/web/20141121014320/http://www.translink.co.uk/Services/Enterprise/ "Translink/Northern Ireland Railways" page on the Enterprise]
* {{cite web| via=YouTube| url=https://www.youtube.com/watch?v=53yOfnYSIxs |archive-url=https://ghostarchive.org/varchive/youtube/20211221/53yOfnYSIxs |archive-date=21 December 2021 |url-status=live| title=201 Class (No. 231) on Enterprise at Quay Street, Balbriggan}}{{cbignore}}

{{Irish train operators}}

{{UK TOCs|current|state=collapsed}}

[[Category:International named passenger trains]]
[[Category:Named passenger trains of the United Kingdom]]
[[Category:Named passenger trains of Ireland]]
[[Category:Great Northern Railway (Ireland)]]
[[Category:Railway services introduced in 1947]]