View source for Tuen Ma line

{{EngvarB|date=June 2021}}
{{Use dmy dates|date=June 2021}}
{{Short description|Hong Kong MTR railway line}}
{{Infobox rail line
| name                            = <big>Tuen Ma line<br>{{lang|zh-Hant-HK|屯馬綫}}</big>
| color                           = {{rcr|MTR|Tuen Ma}}
| status                          = Operational
| image                           = Tuen Ma Line C-Train 202103.jpg
| image_width                     = 325px
| image_alt                       = 
| logo                            = 
| logo_width                      = 
| caption                         = A CRRC Changchun EMU train approaching [[Hin Keng station]]
| type                            = [[Commuter rail]] / [[Rapid transit]]
| system                          = [[MTR]]
| mapcolor                        = {{rcb|MTR|Tuen Ma|box}} [[Brown]] (#{{rcr|MTR|tml}})
| owner                           = [[Kowloon-Canton Railway Corporation]]
| operator                        = [[MTR Corporation]]
| locale                          = [[Districts of Hong Kong|Districts]]: [[Tuen Mun District]], [[Yuen Long District]], [[Tsuen Wan District]], [[Sham Shui Po District]], [[Yau Tsim Mong District]], [[Kowloon City District]], [[Wong Tai Sin District]], [[Sha Tin District]]
| start                           = {{stn|Tuen Mun}}
| end                             = {{stn|Wu Kai Sha}}
| stations                        = 27
| continuesfrom                   = {{plainlist|
*{{rcb|MTR|Ma On Shan|xroute}}
*{{rcb|MTR|West Rail|xroute}}
}}
| connectinglines                 = {{plainlist|
*{{rcb|MTR|East Rail|croute}}
*{{rcb|MTR|Kwun Tong|croute}}
*{{rcb|MTR|Tung Chung|croute}}
*{{rcb|MTR|Tsuen Wan|croute}}
*{{Rail icon|MTR Light Rail}} {{rcb|MTR|Light Rail|croute}}
}}
| speed                           = {{plainlist|
*Average: {{cvt|45|km/h|mph|abbr=on}}
*Maximum: {{cvt|130|km/h|mph|abbr=on}}<ref name="business report 2021">{{cite web|url=https://www.mtr.com.hk/archive/corporate/en/publications/images/business_overview_e.pdf|title=Business Overview|publisher=[[MTR]]|date=July 2021|access-date=2022-08-08|pages=6}}</ref>
}}
| ridership2                      = 595,700 weekday average <br />(Sept to Oct 2014, combined from former Ma On Shan and West rail line ridership)<ref>{{cite web|title=Weekday patronage of MTR heavy rail network from September 1 to 27 and September 28 to October 25, 2014|url=http://gia.info.gov.hk/general/201410/29/P201410290671_0671_136426.pdf|publisher=Legislative Council|access-date=15 April 2015|date=29 October 2014}}</ref>
| planopen                        = {{plainlist|
* 2030 <small>([[Tuen Mun South extension]]; [[Tuen Mun South station|Tuen Mun South]] to [[Tuen Mun station|Tuen Mun]])</small>
}}
| open                            = {{plainlist|
* 20 December 2003 <small>([[KCR West Rail]]; [[Tuen Mun station|Tuen Mun]] to [[Nam Cheong station|Nam Cheong]])</small>
* 24 October 2004 <small>(Tsim Sha Tsui Spur Line; [[East Tsim Sha Tsui station|East Tsim Sha Tsui]] to [[Hung Hom station|Hung Hom]])</small>
* 21 December 2004 <small>([[Ma On Shan Rail]]; [[Wu Kai Sha station|Wu Kai Sha]] to [[Tai Wai station|Tai Wai]])</small>
* 16 August 2009 <small>([[Kowloon Southern Link]]; [[Nam Cheong station|Nam Cheong]] to [[East Tsim Sha Tsui Station|East Tsim Sha Tsui]])</small>
* 14 February 2020 <small>(Phase 1; [[Tai Wai station|Tai Wai]] to [[Kai Tak station|Kai Tak]])</small>
* 27 June 2021 <small>(Full Line; [[Kai Tak station|Kai Tak]] to [[Hung Hom station|Hung Hom]])</small><ref>{{Cite web|url=https://mtr-tuenmaline.hk/en|title = Official website of MTR Tuen Ma Line}}</ref>
}}
| close                           = 
| depot                           = [[Tai Wai station|Tai Wai]], [[Pat Heung]], [[Hung Hom station|Hung Hom]] sidings
| stock                           = [[SP1900 EMU|SP1900 EMU (IKK-train)]]<br>[[MTR CRRC Changchun EMU|Tuen Ma Line C-train]]
| linelength                      = {{cvt|56.2|km|mi|abbr=on}}
| signalling                      = [[SelTrac]] [[CBTC]]
| tracks                          = [[Double-track railway|Double-track]]
| gauge                           = {{RailGauge|sg|allk=on}}
| electrification                 = {{25 kV 50 Hz}} ([[Overhead line]])
| map                             = [[File:MTR Tuen Ma Line single stripe.svg|350px|center]]<hr />{{Tuen Ma line RDT}}
| map_state                       = collapsed
}}
{{Infobox Chinese
| t = 屯馬綫
| s = 屯马线
| p = Tún Mǎ xiàn
| w = Tun<sup>2</sup> Ma<sup>3</sup> hsien<sup>4</sup>
| h = Tûn-Ma-Sien
| j = Tyun4 Maa5 sin3
| y = Tyùn Máh sin
}}
The '''Tuen Ma&nbsp;line''' ({{zh|t=屯馬綫|first=t,j}}) is a [[commuter rail]] / [[rapid transit]] line that forms part of the [[MTR|Mass Transit Railway]] (MTR) system in Hong Kong. It is {{Convert|56.2|km|mi|abbr=}} in length, making it the longest line of the MTR network. It has a total of 27 stations, more than any other in the MTR system.<ref>{{cite web|url=http://www.mtr-shatincentrallink.hk/en/faq/|title=Shatin to Central Link FAQ|publisher=MTR|access-date=21 June 2016}}</ref> It is indicated by '''{{color|#{{rcr|MTR|Tuen Ma}}|Brown}}''' on the [[MTR|MTR map]].

The Tuen Ma line is formed by a merger of two former MTR lines, the [[West Rail line]] and the [[Ma On Shan line]] via a new stretch of mostly underground railway known as the "Tai Wai to Hung Hom section" ({{Lang|zh|大圍至紅磡段}}) of the [[Sha Tin to Central Link]] project. It consists of {{Convert|11|km|mi|abbr=}} of track and six new intermediate stations. The Tai Wai to Kai Tak section (大圍至啟德段) opened on 14 February 2020, while the Kai Tak to Hung Hom section opened on 27 June 2021, thereby completing the line.<ref name="getgoing">{{cite news |title=MTR's Tuen Ma Line to get going on June 27 |url=https://news.rthk.hk/rthk/en/component/k2/1593100-20210528.htm |publisher=RTHK |date=28 May 2021}}</ref>

During the planning and construction phase, this line was referred to as the "East West Corridor" ({{lang|zh-hant|東西走廊}}). On 25 May 2018, the operational name "Tuen Ma line" was confirmed by the MTR Corporation, reflecting the names of [[Tuen Mun New Town|Tuen Mun]] and [[Ma On Shan (town)|Ma On Shan]] where the line's two termini are located. The full journey time is about 73 minutes.<ref>{{cite web |url=https://skypost.ulifestyle.com.hk/article/2969077/%E5%B1%AF%E9%A6%AC%E7%B6%AB%E9%80%9A%E8%BB%8A%EF%BD%9C%E5%B1%AF%E9%96%80%E7%B6%AB%E9%80%9A%E8%BB%8A%E5%84%AA%E6%83%A04%E8%BB%8A%E7%AB%99%E5%87%BA%E5%85%A5%E9%96%98%E6%AF%8F%E7%A8%8B%E6%B8%9B1%E5%85%83%20%E5%85%A8%E7%A8%8B%E9%9C%80%E6%99%8273%E5%88%86%E9%90%98%E6%88%90%E4%BA%BA%E7%A5%A8%E5%83%B923.6%E5%85%83 |title=屯馬綫通車｜屯馬綫通車優惠4車站出入閘每程減1元 全程需時73分鐘成人票價23.6元 |work=Sky Post |language=zh-hk |date=28 May 2021 |access-date=29 May 2021 }}</ref>

==Overview==
{{Rapid transit OSM map
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| frame-long   = 114.116
| frame-width  = 550
| frame-height = 300
| zoom         = 11
| stations     = y
<!--| stations_qid = Q7388350 <!-- not needed as the template can determine this from the page it is being used on. -->
| single_line  = y
| text         = Route of the Tuen Ma line
| plain        = no
| frame-align  = right
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The line starts at [[Tuen Mun station]], [[Tuen Mun]] and ends at {{stn|Wu Kai Sha}} in [[Wu Kai Sha]], [[Ma On Shan (town)|Ma On Shan]]. It is {{cvt|56.2|km|mi|abbr=}} long with 27 stations, and a complete journey lasts 73 minutes in either direction. There are ten [[interchange station]]s: {{stn|Tai Wai}} and {{stn|Hung Hom}} with the {{lnl|MTR|eal}}; {{stn|Diamond Hill}} and {{stn|Ho Man Tin}} with the {{lnl|MTR|ktl}}; {{stn|Nam Cheong}} with the {{lnl|MTR|tcl}}; {{stn|Mei Foo}} with the {{lnl|MTR|twl}}; [[Yuen Long]], [[Tin Shui Wai]], [[Siu Hong station|Siu Hong]] and [[Tuen Mun]] which connects to the [[Light Rail (MTR)|Light Rail]]. The line has two [[railway depot|maintenance depots]] at Tai Wai<ref>{{cite web|url=https://www.arup.com/-/media/arup/files/publications/t/the_arup_journal_issue_3_2007.pdf|title=Tai Wai maintenance centre: planning, design, and construction|work=Arup Journal|year=2007|access-date=15 December 2019}}</ref> and Pat Heung.

Like all MTR lines, the Tuen Ma line is grade separated throughout its entire length. It is mainly underground in the urban sections of [[Kowloon]] and [[Tsuen Wan]], and at-grade or elevated in the rest of the [[New Territories]]. Most of the original Ma On Shan line (between Tai Wai and Wu Kai Sha) is [[Elevated railway|built on a viaduct]] on a rail reservation that existed from the outset of the development of [[Ma On Shan (town)|Ma On Shan New Town]].<ref>{{cite news|title=Land set aside for light rail system|work=South China Morning Post|date=17 May 1986}}</ref> However, the section between {{stn|Shek Mun}} and {{stn|Tai Shui Hang}} is at ground level, located [[Median strip|between the carriageways]] of the [[Tate's Cairn Highway]], along with the section between Tai Wai to {{stn|Hin Keng}}, which is also partially on an [[Embankment (earthworks)|embankment]] and parallel to the {{lnl|MTR|eal}}. The line then goes underground towards the [[Lion Rock Tunnel]], which takes trains through [[Lion Rock Country Park]]. Then, it goes through [[Diamond Hill station]] and [[Kowloon City]] before emerging into open air near [[Hung Hom station]] at ground level. The line then heads southwest into a tunnel after the station and descending underground through {{stn|East Tsim Sha Tsui}} and {{stn|Austin||MTR}} stations (the former having originally being served by the East Rail line, and the track heading northwards through the latter), before returning to ground level (though still fully covered) at [[Nam Cheong station]]. The track then runs northwest through a sealed box tunnel just to the north to and under the [[West Kowloon Highway]] through [[Mei Foo Sun Chuen|Lai Chi Kok Park]] into [[Mei Foo station]], which has a ground-level/underground hybrid design. Bored tunnels traverse densely populated [[Kwai Chung]] and under the [[Tsuen Wan line]] towards [[Tsuen Wan West station]] on [[Land reclamation in Hong Kong|reclaimed land]], after which a 5.5&nbsp;km (3.4&nbsp;mi) bored rock tunnel, the [[Tai Lam Tunnel (Tuen Ma line)|Tai Lam Tunnel]], takes trains through [[Tai Lam Country Park]].

The line then emerges from the tunnel just south of the train depot at [[Pat Heung]] and initially runs at-grade, and later on an [[Embankment (earthworks)|embankment]] as it approaches [[Kam Sheung Road station]]. The rest of the line is [[Elevated railway|fully elevated]] and constructed on a continuous [[viaduct]], running in a westerly direction through the new towns of [[Yuen Long New Town|Yuen Long]] and turning towards the south at [[Tin Shui Wai New Town|Tin Shui Wai]], before taking a bend towards the [[Tuen Mun River]] and eventually terminating at [[Tuen Mun station]].

Construction methods predominantly include [[tunnel boring machine]]s and [[cut-and-cover]], though the [[Lion Rock Tunnel (Tuen Ma line)|Lion Rock Tunnel]] between Hin Keng and the Ma Chai Hang Recreation Ground was constructed using the [[Drilling and blasting|drill-and-blast]] method.

While road and rail traffic in Hong Kong [[left hand drive|move on the left]], the eastern section of the Tuen Ma line is an exception, as trains move [[Right hand drive|on the right]] between Sung Wong Toi and Wu Kai Sha. This allows the southbound tracks of this line and the East Rail Line to lie opposite each other at Tai Wai, such that [[cross-platform interchange]] could be provided there. This design was to speed up passenger interchange between the East Rail line and Tuen Ma line towards Kowloon during the morning commute, although the reverse transfer would require going down to the concourse level and back up again. This layout is maintained as far as [[Sung Wong Toi station|Sung Wong Toi]], before the line goes into a stacked formation at [[To Kwa Wan station|To Kwa Wan]], which has a [[split platform]] layout to allow the tracks to switch sides and adopt the left-hand running used on the original West Rail Line.

Since its opening as part of the KCR system, the interchange station at Tai Wai has not had [[ticket gate]]s between the Ma On Shan Rail and East Rail platforms, unlike at the former KCR system's interchanges with the MTR system; a trip from either line to the other counted as one ride. There was no direct connection between these two lines and the [[West Rail line|West Rail]] while they were part of the KCR network.

==Rolling stock==
For much of its existence, the Ma On Shan line was, in the Hong Kong context, classified as a [[medium-capacity rail transport system|medium-capacity system]]. However, it is capable of passenger volumes of up to 32,000 passengers per hour per direction (PPHPD),<ref>{{cite web |url=http://www.thb.gov.hk/eng/psp/pressreleases/transport/land/2011/201101122a.pdf |title=MTR train frequencies of railway lines in different periods, number of cars on each train, train carrying capacity, train loading rates and number of seats |publisher=[[MTR]] |access-date=23 August 2014}}</ref> which is comparable to the passenger capacity of a full rapid transit or "metro" system.<ref name="PPHPDs">{{cite book |url=https://books.google.com/books?id=cVfnWO9pC8oC&q=216 |title=Integrated Transport: The Future of Light Rail and Modern Trams in the United Kingdom |editor=Great Britain: Parliament: House of Commons: Transport Committee |publisher=The Stationery Office |page=216 |year=2005 |isbn=9780215025739 |access-date=22 February 2014}}</ref> Furthermore, the line has been upgraded to the standard of a full-capacity system in anticipation of the [[Sha Tin to Central Link]], which will extend it to the heart of Kowloon and result in a merger with the full-capacity West Rail line.

KCRC initially ordered 18 sets of 4-car [[SP1900 EMU|SP1950]] trains, built by [[Kinki Sharyo]], running on the Ma On Shan line; they have all since been converted to eight cars. The train is the same model as the SP1900 sets used on the East Rail and West Rail lines, which runs on those lines with twelve-car and eight-car configurations respectively (previously seven cars on the latter, though all has been converted to eight cars and used on the entire line following its completion). They were the only trains in use until March 2017, when newly built eight-car [[MTR CRRC Changchun EMU|Tuen Ma line trains]], manufactured by [[CRRC Changchun Railway Vehicles]], entered service on the Ma On Shan line. Both of these models have a maximum running speed of {{convert|160|km/h|mph|abbr=on}}, but only reach a maximum service speed of {{convert|130|km/h|mph|abbr=on}} on the long section between Kam Sheung Road and Tsuen Wan West stations. Unlike the trains on the East Rail line, there are no [[First class travel|first-class compartments]]. All trains were serviced at Tai Wai depot and are equipped with the [[SelTrac]] IS [[moving block|moving-block]] signalling system for [[Train protection system|train protection]], with provision for upgrading to the [[GSM-R|radio]]-based SelTrac [[Communications-based train control|CBTC]] at a later stage to increase capacity.<ref name="MOSSignal">{{cite news |title=LCQ9: KCRC's rail signalling systems |url=https://www.info.gov.hk/gia/general/200706/06/P200706060111.htm |access-date=5 January 2020 |agency=Government of Hong Kong |date=6 June 2007}}</ref>

The first two converted 8-car SP1900 trains were introduced to the Ma On Shan line on 15 January 2017.<ref name="8CarTomorrowPR">{{cite news |title=First Two 8-car Trains Will Start Serving Ma On Shan Line Passengers Tomorrow |url=http://www.mtr-shatincentrallink.hk/pdf/multimedia-gallery/press/14012017_pr_e.pdf |access-date=5 January 2020 |publisher=MTR Corporation |date=14 January 2017}}</ref> During the transition period with both 4-car and 8-car trains in service, passengers had to pay attention to the [[Passenger information system|platform LCD screens]] and announcements to queue at the right part of the platforms.<ref name="mtr8car">{{cite web|title=Ma On Shan Line: 4-car trains modified to 8-car trains|url=http://mtr.com.hk/en/customer/main/mol_platform.html|website=mtr.com.hk|publisher=[[MTR Corporation]]|access-date=15 January 2017}}</ref> Since December 2017, the Ma On Shan line has been run fully by 8-car trains and all stations retrofitted with [[automatic platform gates]] identical to those installed at elevated stations on MTR's other lines.<ref name="8-Car-APG-Done">{{cite news |title=Upgrade of 8-car Trains and Retrofitting of Automatic Platform Gates on Ma On Shan Line Fully Completed |url=https://www.mtr.com.hk/archive/corporate/en/press_release/PR-17-118-E.pdf |access-date=5 January 2020 |publisher=MTR Corporation |date=23 December 2017}}</ref>

The former West Rail line was served by 33 eight-car [[SP1900 EMU|SP1900]] trains built by a Japanese consortium of [[Kinki Sharyo]] and [[Kawasaki Heavy Industries]], of which 22 were originally ordered by KCRC as seven-car trains for the initial opening of the line.<ref name="JORSA">{{cite web|title=Electric Multiple Units for KCRC MTR of Hong Kong|url=https://www.jorsa.or.jp/en/exports/detail.php?id=20|access-date=14 March 2020|website=Japan Overseas Railway System Association}}</ref> Up to 26 sets run during the [[Rush hour|morning peak service]] with a 171-second [[headway]]; MTRC specifies capacities of 52 seated and 286 standing passengers per car.<ref name="mtrc01">{{cite web|last=MTR Corporation Limited|title=Business Review|url=http://www.mtr.com.hk/eng/publications/images/business_overview_e.pdf|access-date=2014-02-20}}</ref> Beginning in January 2016, all 7-car trains on the former West Rail line were converted to 8-car trains in anticipation of the [[Sha Tin to Central Link]]; this was completed in May 2018.<ref>{{Cite web |date=28 December 2015 |title=First West Rail Line 8-car Train Ready for Passenger Service from 2 January |url=http://www.mtr.com.hk/archive/corporate/en/press_release/PR-15-117-E.pdf |access-date=29 March 2016 |publisher=[[MTR Corporation]]}}</ref> During the transition period with both 7-car and 8-car trains in service, passengers had to pay attention to the [[Passenger information system|platform LCD screens]] and announcements to queue at the right part of the platforms.<ref>{{Cite web |last=Au-yeung |first=Allen |date=28 December 2015 |title=MTR adds eight-car trains to Hong Kong's West Rail line |url=http://www.scmp.com/news/hong-kong/article/1895585/mtr-adds-eight-car-trains-hong-kongs-west-rail-line |access-date=29 March 2016 |website=[[South China Morning Post]]}}</ref> They were the only trains in use on the line until March 2020, when a [[MTR CRRC Changchun EMU|newly built eight-car EMU]], manufactured by [[CRRC Changchun Railway Vehicles]], entered service on the line.

==History==
[[File:MTR Tuen Ma Line Geograpical Map.png|thumb|Geographically accurate map of the Tuen Ma line]]{{Further|Ma On Shan line|West Rail line}}{{Main article|Sha Tin to Central Link}}
Before the [[MTR–KCR merger|merger]] of the two major Hong Kong railway operators, the [[MTR Corporation]] (MTRC) and the [[Kowloon-Canton Railway Corporation]] (KCRC) rail networks in 2007, both the [[West Rail line|West Rail]] (opened in 2003) and the [[Ma On Shan line|Ma On Shan Rail]] (opened in 2004) were operated by KCRC. Both railways were envisaged to be extended in the near future and platforms on the Ma On Shan line were [[Future proof|built with reserved structures]] for extension at a later date.

Both MTRC and KCRC independently submitted their own proposals to the [[Government of Hong Kong|Hong Kong government]] for developing the Sha Tin to Central Link (SCL) by extending their own existing networks. After numerous revisions of their proposals, the government eventually approved the scheme by KCRC, which involved joining the West Rail and the Ma On Shan Rail via the [[Wong Tai Sin District|Wong Tai Sin]] and [[Kowloon City District|Kowloon City]] districts (the phase 1 East West Corridor), and extending [[East Rail line]] to [[Hong Kong Island]]'s central business district (phase 2 North South Corridor).
[[File:MTR_HOM_(67).JPG|alt=|left|thumb|The sign bearing the name "EWL" (東西綫) that was found at Ho Man Tin Station during construction.]]
After the 2007 network merger, operations of all transport services (East Rail, West Rail, Ma On Shan Rail, [[Light Rail (MTR)|Light Rail]], feeder buses and [[Guangzhou–Kowloon through train]]) of the KCRC were leased to the MTRC for 50 years. The MTRC also rebranded the three commuter railways to East Rail line, West Rail line and Ma On Shan linetts like their own railways. Subsequently, the approved SCL schemes fall into the hands of the MTRC.

The construction of East West Corridor, which largely followed an alignment proposed by the MTRC in the 1970s as the [[East Kowloon line (1970 scheme)|East Kowloon line]] and later shelved, began in August 2016. At the time, it was unclear how MTRC would name the new lines or whether they would retain the provisional names "East West Corridor" and "North South Corridor"; the word "corridor" would set a precedent in the naming convention of MTR lines. Speculation of a "East West Line" arose when a photograph of an info plate printed with "EWL" (東西綫) at [[Ho Man Tin station]] while it was under construction surfaced. The plate was removed before the opening of the station that year as part of the [[Kwun Tong line extension]] to [[Whampoa station|Whampoa]]. MTRC eventually announced on 25 May 2018 that the operational name was the Tuen Ma line.

===Construction defects and delay===
The Tuen Ma line was planned to be fully operational in 2019, but after the newly built platforms at [[Hung Hom station]] failed a safety inspection which occurred between December 2018 and January 2019, its full opening was postponed by about two years.<ref>{{cite news|url=https://www.hk01.com/社會新聞/274840/沙中線-供應商稱螺絲帽有10圈-正確做法應完全扭入|title=【沙中線】供應商稱螺絲帽有10圈 正確做法應完全扭入|language=zh-hk|publisher=[[HK01]]|date=24 December 2018|access-date=24 December 2018}}</ref>

[[File:Sha tin central link hung hom south 20190924.jpg|thumb|200x200px|View of the new tracks of the Tuen Ma Line connecting the former Ma On Shan and West Rail lines at the southern end of Hung Hom station in 2019.|right]] 
The head contractor of the SCL construction, Leighton Asia, subsidiary of the [[CIMIC Group]], was accused of covering up construction defects until a whistleblower from a subcontractor leaked photo evidence to the press. This led to more thorough investigations, hearings and inspections behind the set concrete for assessing if it would require demolition and rebuilding the structure from scratch. The Hong Kong government also expressed disappointment in the MTRC executives for their incompetent supervision.

[[Michael Tien]], former KCRC chairman, suggested that it was technically feasible to have the Ma On Shan line be initially extended from Tai Wai to [[Diamond Hill station|Diamond Hill]] station instead of delaying the opening of the entire line. This has the advantage of spreading the Kowloon bound traffic between Tai Wai and [[Kowloon Tong station|Kowloon Tong]] stations of the East Rail Line, which is overcrowded during peak hours.<ref>{{cite news|url=https://www.scmp.com/news/hong-kong/transport/article/2172173/hong-kongs-mtr-corporation-carefully-consider-opening-part|title=Hong Kong's MTR Corporation to 'carefully consider' opening part of scandal-hit Sha Tin-Central rail link by mid-2019|work=[[South China Morning Post]]|date=7 November 2018|access-date=24 December 2018}}</ref> However, the then MTRC chairman, [[Frederick Ma]], insisted that they aimed at inaugurating the whole line in mid-2019 to avoid the extra resources required for operating the line in separate phases.<ref>{{cite news|url=https://www.am730.com.hk/news/%E6%96%B0%E8%81%9E/am%E5%81%B5%E6%9F%A5%E6%B2%99%E4%B8%AD%E7%B6%AB%E6%93%AC%E6%96%AC%E4%BB%B6%E9%80%9A%E8%BB%8A-%E9%81%BF%E7%B4%85%E7%A3%A1%E9%A6%AC%E9%90%B5%E6%96%99%E5%85%88%E9%A7%81%E9%91%BD%E7%9F%B3%E5%B1%B1-148787|title=【沙中線】通車存變數 馬時亨：屯馬線目標明年中全條開通|trans-title=SCL: Uncertain Inauguration. Frederick Ma: Tuen Ma line is expected to be fully operational in the next year (2019)|language=zh-hk|publisher=am730|date=7 November 2018|access-date=24 December 2018}}</ref>

On 18 July 2019, the [[Transport and Housing Bureau]] announced that the Tuen Ma line would open in two phases. On 14 February 2020, the Ma On Shan Line was extended from Tai Wai station to [[Kai Tak station]] because the latter has a [[Railroad switch|crossover track]] which permits the operation of the station as a terminus. The extension, named Tuen Ma line Phase 1, was expected to alleviate significant congestion on the East Rail line between Tai Wai and Kowloon Tong stations in preparation for the shortening of trainsets as part of preparatory works for the cross-harbour extension of that line. The remaining section of the Tuen Ma line, from Kai Tak to Hung Hom, opened on 27 June 2021.<ref>{{cite news|url=https://www.scmp.com/news/hong-kong/transport/article/3019138/first-section-hong-kongs-most-expensive-rail-project-sha|title=First section of Hong Kong's most expensive rail project, the Sha Tin-Central link, could open by early 2020 – but the cost has gone up again|work=South China Morning Post|date=18 July 2019|access-date=19 July 2019}}</ref>

===Future extensions===
In May 2020, the Government submitted a proposal for the Tuen Mun South Extension to the Legislative Council Subcommittee on Railway Matters. In addition to the "Railway Development Strategy 2014", which includes a proposal for [[Tuen Mun South station]] near the [[Tuen Mun Ferry Pier]], the MTRCL has proposed in the latest project proposal to add [[A16 station|an additional station in Tuen Mun Area 16]]. Building an intermediate section in Tuen Mun Area 16 will require the Tuen Mun Swimming Pool to be relocated. A possible relocation for the Tuen Mun Swimming Pool is at the Tuen Mun Golf Centre; the specific plan depends on the technical feasibility study. If, after research, it is confirmed that the above-mentioned location is not suitable, MTRCL will identify other possible locations. Considering that the detailed planning and design of the project will take about two to three years, the Tuen Mun South Extension started construction in 2023 and will be completed in 2030. The government has invited MTRCL to carry out the detailed planning and design of the Tuen Mun South Extension project, and will negotiate with the MTR Corporation on the financing arrangements for the Tuen Mun South Extension on the basis of the "ownership" model for the project.<ref>{{Cite web|title=屯門南延線 (Tuen Mun South Extension)|url=https://www.legco.gov.hk/yr19-20/chinese/panels/tp/tp_rdp/papers/tp_rdp20200605cb4-646-1-c.pdf|date=May 2020|website=LegCo|access-date=30 May 2020}}</ref>

==Train services==
* Weekdays 
** Morning peak: 20-23tph (2.7-3.0 mins)
** Evening peak: 18-19tph (3.2-3.5mins)
* Weekdays non-peak hours / Sundays and public holidays: 9-10tph (6-7.3mins)
* Saturdays: 9-13tph(4.7-7.3mins)<ref>{{citation|url=http://www.mtr.com.hk/en/customer/services/train_service_index.html|title=Service Hours|work=MTR|accessdate=29 June 2021}}</ref>

Not all trains on Tuen Ma line run the entirety of the line. Shorter trips occur regularly during peak hours and at the start or end of service:
{|class=wikitable
!Origin!!Destination
|-
!colspan=2 style="font-size:85%"|East-bound
|-
|Tuen Mun
|Hung Hom, Diamond Hill, or Wu Kai Sha
|-
|Tin Shui Wai, Tsuen Wan West, East Tsim Sha Tsui or Tai Wai
|Wu Kai Sha
|-
!colspan=2 style="font-size:85%"|West-bound
|-
|Wu Kai Sha
|Tai Wai, Hung Hom, Mei Foo or Tuen Mun
|-
|City One, Ho Man Tin, Hung Hom, East Tsim Sha Shui, Nam Cheong or Kam Sheung Road
|Tuen Mun
|}

==Stations==
The following is a list of the stations on the Tuen Ma line.

{| class="wikitable" style="width: 75%; margin: 0.5em auto; text-align: center"
! colspan="3" | Livery and name
! rowspan="2" | Connections
! rowspan="2" | Opening date
! rowspan="2" | [[Districts of Hong Kong|District]]
! rowspan="2" |Original line
|-
! colspan="2" |English
!Chinese
|-bgcolor = #{{rcr|MTR|Tuen Ma}}
|colspan = "7" style="text-align:center;"|'''<span style="color:white;">Tuen Ma Line (TML)</span>'''
|-
| style="background:#954535" |
| '''{{STN|Wu Kai Sha|x}}'''
|烏溪沙
| rowspan="8" |—
| rowspan="8" | 21 December 2004
| rowspan="10" | [[Sha Tin District|Sha Tin]]
| rowspan="9" |{{rcb|MTR|Ma On Shan|xroute}}
|-
| style="background:#BAAADB" |
| '''{{STN|Ma On Shan|x}}'''
|馬鞍山
|-
| style="background:#93BCE6" |
| '''{{STN|Heng On|x}}'''
|恆安
|-
| style="background:#00FF00" |
| '''{{STN|Tai Shui Hang|x}}'''
|大水坑
|-
| style="background:#FBEC5D" |
| '''{{STN|Shek Mun|x}}'''
|石門
|-
| style="background:#FFA500" |
| '''{{STN|City One|x}}'''
|第一城
|-
| style="background:#C882B0" |
| '''{{STN|Sha Tin Wai|x}}'''
|沙田圍
|-
| style="background:#FFD280" |
| '''{{STN|Che Kung Temple|x}}'''
|車公廟
|-
| style="background:#282C8F" |
| '''{{STN|Tai Wai|x}}'''
|大圍
|style="text-align:left;"| {{rcb|MTR|East Rail|croute}}
| rowspan="1" | 15 August 1983
|-
| style="background:#64FF68" |
| '''{{STN|Hin Keng|x}}'''
|顯徑
|—
| 14 February 2020
| rowspan="6" |New stations
|-
| style="background: black" |
| '''{{STN|Diamond Hill|x}}'''
|鑽石山
|style="text-align:left;"| {{plainlist|
*{{rcb|MTR|Kwun Tong|croute}}
*''{{rcb|MTR|East Kowloon|croute}} <small>(proposed)</small>''
}}
| rowspan="1" | 1 October 1979
| [[Wong Tai Sin District|Wong Tai Sin]]
|-
| style="background:#FFA500" |
| '''{{STN|Kai Tak|x}}'''
|啟德
| rowspan="3" |—
| 14 February 2020
| rowspan="4" | [[Kowloon City District|Kowloon City]]
|-
| style="background:#d08a00" |
| '''{{STN|Sung Wong Toi|x}}'''
|宋皇臺
| rowspan="2" |27 June 2021<ref name="getgoing"/>
|-
| style="background:#A9E2F3" |
| '''{{STN|To Kwa Wan|x}}'''
|土瓜灣
|-
| style="background:#EEF198" |
| '''{{STN|Ho Man Tin|x}}'''
|何文田
|style="text-align:left;"| {{rcb|MTR|Kwun Tong|croute}}
| rowspan="1" |23 October 2016
|-
| style="background:#FF0077" |
| '''{{STN|Hung Hom|x}}'''
|紅磡
| style="text-align:left;"|{{plainlist|
*{{rcb|MTR|East Rail|croute}}
*<small><s>{{ric|CR}} [[Rail transport in Hong Kong#Cross-border services|Through Train services]] to [[Mainland China]]</s> (service halted indefinitely in 2020; formally disused in 2024)</small>
}}
| 30 November 1975{{efn|name=HUH-opened|Originally opened as part of the [[Kowloon–Canton Railway]].}}<small><br />''relocated on 20 June 2021''</small>
| rowspan="3" | [[Yau Tsim Mong District|Yau Tsim Mong]]
| rowspan="10" |{{rcb|MTR|West Rail|xroute}}
|-
| style="background:#FFFF00" |
|'''{{STN|East Tsim Sha Tsui|x}}'''
|尖東
|style="text-align:left;"|{{nowrap|{{rcb|MTR|Tsuen Wan|croute}} ({{STN|Tsim Sha Tsui|x}})}}{{efn|East Tsim Sha Tsui and Tsim Sha Tsui stations are physically connected by underground walkways outside the stations' paid areas. The out-of-station interchange is only free for passengers using an [[Octopus card]]; passengers travelling with Single Journey Tickets need to buy another ticket for the trip after the interchange, with a resulting higher cost.}}
|24 October 2004{{efn|name=EAL-opened|Originally opened as part of the [[East Rail line]].}}
|-
| style="background:#D05A3A" |
|'''{{STN|Austin|x|MTR}}'''
|柯士甸
|style="text-align:left;"|{{plainlist|
*{{ric|MTR}}''' {{Stnlnk|West Kowloon}}:'''
* {{nbsp|6}}{{ric|MTR}} {{ric|CRH}} [[Guangzhou–Shenzhen–Hong Kong Express Rail Link|High-speed rail]] services to [[Mainland China]]
}}
|16 August 2009
|-
| style="background:#FFFF80" |
|'''{{STN|Nam Cheong|x}}'''
|南昌
|style="text-align:left;"|{{rcb|MTR|Tung Chung|croute}}
| rowspan="1" |16 December 2003
| rowspan="2" |[[Sham Shui Po District|Sham Shui Po]]
|-
| style="background:#0088DD" |
|'''{{STN|Mei Foo|x}}'''
|美孚
|style="text-align:left;"|{{rcb|MTR|Tsuen Wan|croute}}
| rowspan="1" |17 May 1982
|-
| style="background: #f50505" |
|'''{{STN|Tsuen Wan West|x}}'''
|荃灣西
|—{{efn|[[Tsuen Wan West station]] of the West Rail line and [[Tsuen Wan station]] of the [[Tsuen Wan line]] are not physically linked, but [[Public light bus|green public light bus]] route 95K (free transfer with an immediate West Rail journey record on the [[Octopus card]]) connects the two stations. It normally takes 15–20 minutes to go to Tsuen Wan station on foot.}}
| rowspan="5" | 20 December 2003
|[[Tsuen Wan]]
|-
| style="background:#A11919" |
|'''{{STN|Kam Sheung Road|x}}'''
|錦上路
|style="text-align:left;"|''{{rcb|MTR|nol|croute}} <small>(proposed)</small>''
| rowspan="5" |[[Yuen Long District|Yuen Long]]
|-
| style="background:#42D7DC" |
|'''{{STN|Yuen Long|x}}'''
|元朗
|style="text-align:left;"|{{plainlist|
*{{ric|MTR Light Rail}} '''{{Tstop|Yuen Long}}:'''
*<small>{{rcb|MTR Light Rail|610|route}} {{rcb|MTR Light Rail|614|route}} {{rcb|MTR Light Rail|615|route}} {{rcb|MTR Light Rail|761P|route}}</small>
}}
|-
| style="background:#F697B4" |
|'''{{STN|Long Ping|x}}'''
|朗屏
|—
|-
| style="background:#FFCF2A" |
|'''{{STN|Tin Shui Wai|x}}'''
|天水圍
|style="text-align:left;"|{{plainlist|
*{{ric|MTR Light Rail}} '''{{Tstop|Tin Shui Wai}}:'''
*<small>{{rcb|MTR Light Rail|705|route}} {{rcb|MTR Light Rail|706|route}} {{rcb|MTR Light Rail|751|route}} {{rcb|MTR Light Rail|751P|route}}</small>
*{{ric|MTR Light Rail}} '''{{Tstop|Tin Yiu}}:'''
*<small>{{rcb|MTR Light Rail|705|route}} {{rcb|MTR Light Rail|706|route}} {{rcb|MTR Light Rail|761P|route}}</small>
}}
|-
||
|style="background-color:lightgrey;"|'''''{{STN|Hung Shui Kiu|x}}'''''
|style="background-color:lightgrey;"|''洪水橋''
|style="background-color:lightgrey;"|
|style="background-color:lightgrey;"|2030 <small>''(Expected)''</small>
|style="background-color:lightgrey;"|Planned new station
|-
| style="background:#33CC99" |
|'''{{STN|Siu Hong|x}}'''
|兆康
|style="text-align:left;"|{{plainlist|
*{{ric|MTR Light Rail}} '''{{Tstop|Siu Hong}}:'''
*<small>{{rcb|MTR Light Rail|505|route}} {{rcb|MTR Light Rail|610|route}} {{rcb|MTR Light Rail|614|route}} {{rcb|MTR Light Rail|614P|route}} {{rcb|MTR Light Rail|615|route}} {{rcb|MTR Light Rail|615P|route}} {{rcb|MTR Light Rail|751|route}}</small>
}}
|rowspan="2"| 20 December 2003
| rowspan="4" |[[Tuen Mun District|Tuen Mun]]
| rowspan="2" |{{rcb|MTR|West Rail|xroute}}
|-
| style="background:#035F94" |
|'''{{STN|Tuen Mun|x}}'''
|屯門
|style="text-align:left;"|{{plainlist|
*{{ric|MTR Light Rail}} '''{{Tstop|Tuen Mun}}:'''
*<small>{{rcb|MTR Light Rail|505|route}} {{rcb|MTR Light Rail|507|route}} {{rcb|MTR Light Rail|751|route}}</small>
}}
|-
|style="background-color:lightgrey;"|
|style="background-color:lightgrey;"|'''''{{STN|A16|x}}'''''
|style="background-color:lightgrey;"|''第16區''
|style="background-color:lightgrey;"|
|rowspan="2"; style="background-color:lightgrey;"|2030 <small>''(Expected)''</small>
|rowspan="2"; style="background-color:lightgrey;"|Planned new stations
|-
|style="background-color:lightgrey;"|
|style="background-color:lightgrey;"|'''''{{STN|Tuen Mun South|x}}'''''
|style="background-color:lightgrey;"|''屯門南''
|style="background-color:lightgrey;"|{{plainlist|
*{{ric|MTR Light Rail}} '''{{Tstop|Tuen Mun Ferry Pier}}''':
*<small>{{rcb|MTR Light Rail|507|route}}{{rcb|MTR Light Rail|610|route}}{{rcb|MTR Light Rail|614|route}}{{rcb|MTR Light Rail|614P|route}}{{rcb|MTR Light Rail|615|route}}{{rcb|MTR Light Rail|615P|route}}</small>
*{{ric|MTR Light Rail}} '''{{Tstop|Siu Hei}}''':
*<small>{{rcb|MTR Light Rail|507|route}} {{rcb|MTR Light Rail|614|route}} {{rcb|MTR Light Rail|614P|route}}</small>
}}
|-bgcolor = #{{rcr|MTR|Tuen Ma}}
|colspan = "7"|
|}

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

==References==
{{Reflist}}

==External links==
{{commons category|Tuen Ma line}}
{{MTR}}
{{Sha Tin to Central Link navbox}}
{{Ma On Shan Line navbox}}

{{DEFAULTSORT:East-West Line (Mtr)}}
[[Category:MTR lines]]
[[Category:Sha Tin to Central Link]]
[[Category:Tuen Ma line| ]]