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Downtown Line

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(Redirected from Downtown MRT line)
Not to be confused with one of the stations on this line, Downtown MRT station.


Downtown Line
A C951 train at Stevens station.
Overview
Native nameMalay: Laluan MRT Pusat Bandar
Chinese: 滨海市区地铁线
Tamil: டவுன்டவுன் எம்ஆர்டி வழி
StatusOperational
Under construction (DTL3e)
Under planning (DTL2e)
OwnerLand Transport Authority
LocaleSingapore
Termini
Stations35 (Operational)[1]
2 (Under construction)
2 (Under planning)
Color on map     Blue (#005ec4)
Service
TypeRapid transit
SystemMass Rapid Transit (Singapore)
Services2
Operator(s)SBS Transit DTL Pte Ltd[2]
Depot(s)Gali Batu
Tai Seng
East Coast (Future)
Rolling stockBombardier Movia C951(A)
Daily ridership463,000 (July 2020)[3]
History
Planned opening2H 2026 (DTL3e)
2035; 9 years' time (2035) (DTL2e)
Opened22 December 2013; 12 years ago (2013-12-22) (DTL1)
27 December 2015; 10 years ago (2015-12-27) (DTL2)
21 October 2017; 8 years ago (2017-10-21) (DTL3)
28 February 2025; 12 months ago (2025-02-28) (Hume)
Technical
Line length41.9 km (26.0 mi) (Operational)[1]
2.2 km (1.4 mi) (Under construction)
4 km (2.5 mi) (Under planning)
CharacterFully underground
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge[4]
Electrification750 V DC third rail
Operating speedService limit: 80 km/h (50 mph)[5]
Maps
Legend
North–South Line
to Marina South Pier
■
■
Thomson–East Coast Line
to Woodlands North
 NS6  DE2 
 Sungei Kadut
Sungei Bedok
 TE31  DT37 
North–South Line
to Jurong East
■
■
Thomson–East Coast Line
to Tanah Merah
Sungei Bedok
 DE1 
 DE1
East Coast Integrated Depot
Gali Batu Depot
Xilin
 DT36 
 Expo
 DT35 
 DT1 
 Bukit Panjang
■
← to Changi Airport
to Tanah Merah →
 CG1 
 BP6 
← to Choa Chu Kang
to Fajar via Petir/Senja →
■
Upper Changi
 DT34 
 DT2 
 Cashew
Pan Island Expressway
 DT3 
 Hillview
Tampines East
 DT33 
 DT4 
 Hume
■
← to Pasir Ris
to Tuas Link →
 EW2 
 DT5 
 Beauty World
Tampines
 DT32 
Pan-Island Expressway
Tampines West
 DT31 
 CR15 
← to Jurong Lake District
to Aviation Park →
■
Bedok Reservoir
 DT30 
 DT6 
 King Albert Park
Bedok North
 DT29 
 DT7 
 Sixth Avenue
Kaki Bukit
 DT28 
 DT8 
 Tan Kah Kee
Tai Seng Facility Building
 CC19 
Circle Line
to HarbourFront
■
Ubi
 DT27 
 DT9 
 Botanic Gardens
 CC10 
 TE11 
← to Bayshore
to Woodlands North →
■
MacPherson
 DT26 
 DT10 
 Stevens
Kallang–P.L. Expressway
 DT11 
 Newton
Mattar
 DT25 
 NS21 
← to Marina South Pier
to Jurong East →
■
Pan Island Expressway
Central Expressway
Geylang Bahru
 DT24 
North East Line
to Punggol Coast
■
Kallang River
 DT12  NE7 
 Little India
Bendemeer
 DT23 
 DT13 
 Rochor
Jalan Besar
 DT22 
 DT21 
 Bencoolen
■
East–West Line
to Pasir Ris
 DT20 
 Fort Canning
Bugis
 EW12  DT14 
Singapore River
■
East–West Line
to Tuas Link
 Promenade
 DT15  CC4 
 NE4 
North East Line
to HarbourFront
■
■
Circle Line
to Dhoby Ghaut
 DT19 
 Chinatown
Marina Reservoir
 DT18 
 Telok Ayer
Bayfront
 DT16  CE1 
 DT17 
 Downtown
■
Circle Line
to Marina Bay
This diagram:
Map
Interactive Map

The Downtown Line (DTL) is a medium-capacity Mass Rapid Transit (MRT) line in Singapore. Operated by SBS Transit, tt runs from Bukit Panjang station in the north-west of the country towards Expo station in the east via a loop around the city centre. Coloured blue on the rail map, the line serves 35 stations, all of which are underground.[2] The DTL is the fifth MRT line on the network.

The DTL was initially conceived as three separate projects – the Bukit Timah Line, the northern half of the Eastern Region Line and the Downtown Extension of the Circle Line. These projects were merged into the DTL in 2007 and construction began in three stages. DTL1, which runs from Bugis to Chinatown, opened in 2013. Despite the insolvency of Alpine Bau, DTL2 commenced operations in 2015, followed by DTL3 in 2017, which spans from Fort Canning to Expo. Hume station, an infill station between Hillview and Beauty World, began operations in February 2025.

At 41.9 kilometres (26.0 mi), the DTL is the longest underground and automated MRT line in Singapore.[1] The line uses the Siemens Trainguard Sirius Communications-based train control (CBTC) moving block system. The Bombardier Movia C951 trains run on the DTL in a three-car formation. Thirty-three artworks are displayed on the DTL as part of the Art-in-Transit programme.

New extensions are being planned for the DTL. A two-station extension to Sungei Bedok, is under construction and is scheduled to begin operations from the second half of 2026. A two-station extension to connect with the North–South Line at Sungei Kadut is also being planned and set to open in 2035.

History

[edit]

Planning

[edit]

At the opening ceremony for Dover station in October 2001, Singapore's transport minister Yeo Cheow Tong announced that the government would proceed with three new rail projects: the Bukit Timah Line (BTL), the Eastern Region Line (ERL) and the Jurong Region Line.[6][7] The BTL and the northern half of the ERL were subsequently incorporated into the Downtown Line (DTL).[8][9] The BTL was planned to be a fully underground line serving Bukit Panjang, Upper Bukit Timah and Bukit Timah, with the aim of alleviating traffic congestion along the Bukit Timah and Dunearn Road corridor. The ERL was planned as a loop line to complement the East–West Line, serving residents in Singapore's eastern region, particularly Tampines, Bedok, Marine Parade, MacPherson and Kaki Bukit.[6][7]

On 14 June 2005, the Land Transport Authority (LTA) announced plans for the Downtown Extension (DTE), which would be a branch of the Circle Line (CCL).[10] Comprising five stations from Milennia (now Promenade) to Chinatown,[11][12][13] the DTE would serve the development of the Downtown at Marina Bay – a planned business and financial hub.[12] The Chief Executive of LTA at the time, Yam Ah Mee, also revealed that the transport agency was studying further extensions to the DTE, including an eastward extension to Kim Chuan Depot and a westward extension linking the line to the BTL.[14]

In March 2006, LTA rail director Lim Bok Ngam told The Straits Times that LTA planners and engineers were assessing ground conditions and possible station locations for the BTL and ERL. The upper portion of the 40 km (25 mi) ERL, which would serve Jalan Besar, Bedok and Tampines, was planned to be constructed first.[15] During the Committee of Supply debate in 2007, transport minister Raymond Lim announced that LTA was finalising feasibility studies for a new 33-station DTL, which would connect the eastern and north-western corridors to Marina Bay.[16] Lim also announced that the DTE would be incorporated into the DTL.[17]

In April 2007, Lim announced that the government would invest S$12 billion dollars into the DTL. The 40 km (25 mi) line would be built in three stages with 33 stations, and was expected to be completed by 2018.[18] The DTE would be constructed as part of DTL Stage 1 (DTL1), a 4.3 kilometres (2.7 mi) section that included Bugis station. DTL Stage 2 (DTL2), which comprised the BTL, would run 16.6 kilometres (10.3 mi) from Bukit Panjang to Bugis. DTL Stage 3 (DTL3), which was the northern portion of the ERL, would span 19.1 kilometres (11.9 mi) from Chinatown to Expo station.[19][20][21] The DTL will be a medium-rail line with three-car trains,[22] as constructing the line to accommodate higher-capacity trains would have increased project costs by 30 per cent.[23] The line was projected to serve about 500,000 commuters daily.[23]

Construction

[edit]
Construction site of Rochor in August 2014, which involved the diversion of the Rochor Canal
The temporary viaduct built at Cross Street for the construction of Telok Ayer in December 2010
The construction of DTL tunnels between Chinatown and Fort Canning. The project was considered an engineering feat as the tunnels' construction involved the diversion of the Singapore River.[24][25]
Downtown Line stations timeline
Date of opening Project Description
22 December 2013 DTL1 Bugis – Chinatown
27 December 2015 DTL2 Bukit Panjang – Rochor
21 October 2017 DTL3 Fort Canning – Expo
28 February 2025 Hume Opening of Hume station
2H 2026 DTL3e Expo – Sungei Bedok
2035 DTL2e DE1 – Sungei Kadut

Construction of the DTL began with a groundbreaking ceremony at Chinatown station on 12 February 2008.[26] The 12 stations of DTL2 were announced in July that year. A two-storey building at Halifax Road and two strips of land at Upper Bukit Timah Road were gazetted for acquisition.[27] In November 2008, the LTA awarded the contracts for the line's signalling, communications systems and rolling stock.[28] Through a public poll, the station names of DTL1 and DTL2 were finalised in June 2009.[29][30] The LTA also reported that Bayfront station was the most advanced among the DTL1 stations in terms of construction progress, with 85% of excavation works completed.[31] Construction of DTL2 officially began with a groundbreaking ceremony at Beauty World station on 3 July 2009.[32] DTL2 tunnelling works began in June 2011.[33]

In August 2010, the 16 stations of DTL3 were announced,[34][35] which included an additional station in Jalan Besar.[36][37] Due to the increased construction costs, the LTA also announced that the project would exceed the S$12 billion budget.[36] The affected private properties slated for acquisition included: a Shell petrol station along Upper Changi Road East, two parking lots at Bencoolen House, part of the food court at Peony Mansion, 15 landed homes along Merpati Road and Jalan Anggerek, vacant land behind Kaki Bukit Techpark and the Techview Building, as well as an empty plot next to Plaza by the Park.[34][37] Following a public poll with 3000 respondents, the names of the DTL3 stations were finalised in August 2011.[38][39] In the same month, SBS Transit was apppointed by LTA to operate the line for 15 years under the New Rail Financing Framework.[40][41] Construction of DTL3 officially began with a groundbreaking ceremony at Expo station on 28 November 2011.[32][42] Tunnelling works for the DTL3 officially began at Mattar station on 11 July 2012.[43]

Construction of DTL1 involved tunnelling under shophouses and high-rise buildings in Singapore's Central Business District.[44] To construct Telok Ayer station, a temporary viaduct was built along Cross Street to replace the lanes closed for the station's construction.[45][46][47] DTL2 was mainly constructed in varying soil conditions of marine clay and shallow rock formation at Woodlands Road and Upper Bukit Timah Road.[48][49] At Rochor station, the Rochor Canal was temporarily diverted to a 150-metre (490 ft) canal box.[50][51][52] The arterial roads of Sungei Road and Rochor Canal Road were rerouted several times.[50] Steel decks for traffic were installed above the canal due to limited room to divert the roads sideways.[53] Cement was pumped into the soft marine clay extending 30 metres (98 ft) deep.[50][51][53]

At Fort Canning station, the Central Expressway had to be closely monitored for any structural movement.[54] The Singapore River also had to be diverted for the construction of tunnels between Chinatown and Fort Canning,[55] as direct tunnelling under the river would risk ground subsidence or tunnel flooding.[56] Between Fort Canning and Bencoolen, the tunnels were also built rather close to the operational tunnels of the North East (NEL), North–South (NSL) and Circle lines.[57][58] Various instruments were used to monitor the live tunnels to ensure the construction of the DTL tunnels did not impact the train operations.[59][58] The construction of Expo DTL station also involved the underpinning of two existing MRT viaduct pier foundations. A transfer-beam was constructed before the excavation to support the two pillars and hydraulic jacks were installed on the transfer beam.[60]

On 19 June 2013, Alpine Bau, the main contractor for three DTL stations – King Albert Park, Sixth Avenue and Tan Kah Kee – went bankrupt.[61][62][63] While seeking a new contractor, the LTA appointed McConnell Dowell South East Asia, the contractor for Beauty World station, as the caretaker contractor to carry on tunnelling works. Through engagement with the Ministry of Manpower, the 400 workers who were affected were reassigned or sent home.[64][65] New contractors – McConnell Dowell South East Asia and SK E&C; (Singapore) – were appointed to continue construction works for the three affected stations in August 2013, with DTL2's completion date delayed to the middle of 2016.[66]

Opening

[edit]

An open house for the DTL1 stations was held on 7 December 2013,[67][68] before DTL1 commenced operations on 22 December.[69][70] An opening ceremony was held on the day before, presided by prime minister Lee Hsien Loong.[69][71] The DTL was hit by a 15-minute disruption on its opening day. In interviews with Today, some businesses along the line expressed hopes of increased footfall, but anticipated that the bulk of their patronage would continue to come from weekday office workers and regular weekend customers.[72]

On 28 June 2015, transport minister Lui Tuck Yew announced that the DTL2 would be opened earlier,[73][74] with the works 95% complete.[75] The DTL Operation Control Centre (OCC), which was operating at Kim Chuan, would be relocated to Gali Batu Depot.[74] Tunnelling works for DTL3 were completed in June 2015.[76] A public preview for DTL2 was held on 5 December.[77] DTL2 began operations on 27 December 2015,[78] and Prime Minister Lee Hsien Loong presided over the DTL2 opening ceremony at Botanic Gardens.[79] Those interviewed by The Straits Times said that the new extension had significantly reduced their travel times.[78] In July 2016, the LTA reported that daily weekday ridership on the DTL has tripled from 83,000 in October 2015 to 250,000. More passengers from the NSL and NEL began transferring to the DTL for their journeys into the city.[80]

On 31 May 2017, the LTA announced that DTL3 would open on 21 October that year.[81][82] The DTL3 open house was held on 15 October.[83] The opening ceremony of DTL3 was held at Expo station and presided by transport minister Khaw Boon Wan.[84][85] On its opening day, DTL services were disrupted by a defective train and the activation of an emergency communication button by a passenger.[86][87] Ridership on the DTL increased to 470,000 in February 2018.[88] In August 2020, transport minister Ong Ye Kung disclosed that the DTL's construction costs amounted to S$21 billion.[89]

Subsequent developments

[edit]

An extension of DTL3 to connect with the ERL[a] was first announced by transport minister Lui in January 2013 as part of the 2013 Land Transport Master Plan.[92][93] Details of the DTL3 extension (DTL3e) were finalised on 15 August 2014 alongside the merger of the ERL and the Thomson Line into the Thomson–East Coast Line (TEL).[94][95] The 2.2 km (1.4 mi) extension would include Xilin and Sungei Bedok, the latter serving as an interchange station with TEL.[94] While initially planned to be completed by 2024,[95] transport minister Chee Hong Tat announced on 6 December 2024 that DTL3e would only commence operations in the second half of 2026.[96]

During the construction of the DTL, only the structural provisions for Hume station were built.[97][98] These shell structural provisions were completed in 2014.[99] Following petitions from nearby residents advocating for the station's opening,[100][101][102] senior minister of state for transport Janil Puthucheary announced in March 2019 that Hume station would be built in tandem with the redevelopment of the Rail Corridor.[103][104] Initially expected to open in the second quarter of 2025,[96] Hume station opened on 28 February 2025.[105][106] Hume station is the first underground infill station to open in Singapore.[107]

In 2019, the LTA announced that the DTL would be extended from Bukit Panjang to interchange with the NSL at Sungei Kadut.[108][109] Details of the 4 km (2.5 mi) extension were finalised in January 2025.[110] Slated to begin operations in 2035, DTL2e would include an additional unnamed station between Sungei Kadut and Bukit Panjang.[111]

Network and operations

[edit]

Service

[edit]

The DTL is a medium-capacity rail line.[22][40] In June 2025, the DTL recorded 463,000 daily passenger trips.[3] The line operates between 5:30 am and 12:46 am. On weekdays and Saturdays, the first train leaves Bukit Panjang at 5:30 am; the last train leaves Expo at 11:40 pm.[112] Trains run every 2.5 to 5 minutes,[113] and the line's total travel time is 69 minutes.[114]

The DTL is operated by SBS Transit,[115] and it is the first MRT line to be operated under the New Rail Financing Framework (NRFF).[40][116] Under the NRFF, the LTA and SBS Transit share the profits and financial risks in operating the DTL while SBS Transit pays a license charge to the government. In 2022, the DTL was brought under a revised version of the NRFF, which enhanced the profit- and risk-sharing mechanisms for the operator and the government. The new NRFF is intended to mitigate commercial volatility for the operator while adjusting the level of revenue risk assumed by the government.[116][117][118] As such, SBS Transit operates the DTL, alongside the NEL and the Sengkang and Punggol LRT lines, under a consolidated rail licence until 31 December 2032.[119]

Route

[edit]
Geographic route map of the DTL

The fully-underground 42-kilometre (26-mile) DTL runs from Bukit Panjang in northwestern Singapore to Singapore Expo in eastern Singapore via the Central Business District.[8][120] Beginning at Bukit Panjang, the line runs south along Upper Bukit Timah Road, then parallels Dunearn Road and Bukit Timah Road between King Albert Park and Newton.[121] The line continues along Bukit Timah Road, Sungei Road, Rochor Canal Road and Rochor Road between Newton and Bugis station.[122][123] Turning south to Promenade, the DTL runs parallel with the CCL and crosses the Marina Bay to Bayfront,[124] before turning west to Downtown station.[121] The line parallels Cross Street between Telok Ayer and Chinatown.[125][126]

Turning northeast,[121] the DTL crosses the Singapore River to Fort Canning station and passes underneath Fort Canning Hill.[127] The line self-intersects between Bencoolen and Jalan Besar. After Geylang Bahru, the DTL continues in an eastward direction, briefly paralleling Ubi Avenue 2 and Kaki Bukit Avenue 1.[121] Reception tracks from Ubi and Bedok North connects the DTL to the Tai Seng Facility Building.[35][128][129] After Bedok Reservoir station, the line briefly turn northwards to Tampines West, then eastwards to Tampines, and southwards to Upper Changi station before terminating at Expo station.[121] The DTL will be extended to connect with the Thomson–East Coast Line at Sungei Bedok station.[130] The line is coloured blue on official maps.[131]

Stations

[edit]

The line has 35 operational stations from Bukit Panjang to Expo. Eleven stations connect to other MRT/LRT lines.[131][120] Three interchange stations – Bukit Panjang, Newton and Tampines – operate as out-of-station interchanges, requiring passengers to tap out and re-enter the system to transfer between the lines.[132]

Station code Station name Images Interchange;
Adjacent transportation 		Opening
DTL2e (under planning, to be ready by 2035)
 DE2  NS6  Sungei Kadut Does not appear  North–South Line  (2035)
2035;
9 years' time
 DE1  DE1 Does not appear —
In operation
 DT1 – BP6  Bukit Panjang  Bukit Panjang LRT 
―
Bukit Panjang
27 December 2015;
10 years ago
 DT2  Cashew —
 DT3  Hillview
 DT4  Hume
28 February 2025;
1 year ago
 DT5  Beauty World Beauty World (2028)[133]
27 December 2015;
10 years ago
 DT6  CR15  King Albert Park  Cross Island Line  (2032)
 DT7  Sixth Avenue —
 DT8  Tan Kah Kee
 DT9  CC19  Botanic Gardens  Circle Line 
 DT10  TE11  Stevens  Thomson–East Coast Line 
 DT11 – NS21  Newton  North–South Line 
 DT12  NE7  Little India  North East Line 
 DT13  Rochor —
 DT14  EW12  Bugis  East–West Line 
22 December 2013;
12 years ago
 DT15  CC4  Promenade  Circle Line 
 DT16  CE1  Bayfront  Circle Line Extension 
 DT17  Downtown —
 DT18  Telok Ayer
 DT19  NE4  Chinatown  North East Line 
 DT20  Fort Canning —
21 October 2017;
8 years ago
 DT21  Bencoolen
 DT22  Jalan Besar
 DT23  Bendemeer
 DT24  Geylang Bahru
 DT25  Mattar
 DT26  CC10  MacPherson  Circle Line 
 DT27  Ubi —
 DT28  Kaki Bukit
 DT29  Bedok North
 DT30  Bedok Reservoir
 DT31  Tampines West
 DT32 – EW2  Tampines  East–West Line 
―
Tampines
Tampines Concourse
 DT33  Tampines East —
 DT34  Upper Changi
 DT35  CG1  Expo  East–West Line (Changi Airport Branch Line)  (until mid-2030s)
 Thomson–East Coast Line  (after mid-2030s)
DTL3e (under construction, to be ready by 2H 2026)
 DT36  Xilin —
2H 2026;
0 years ago
 DT37  TE31  Sungei Bedok  Thomson–East Coast Line  (2026)

Infrastructure

[edit]

Rolling stock

[edit]
Interior of a Bombardier Movia C951

The DTL's rolling stock consists of a fleet of three-car trains with four doors on each side of the carriage.[134] An initial order for 73 Bombardier Movia C951 trains was placed for SS$570.7 million.[135][136][137] In March 2013, the LTA ordered an additional 15 trainsets from Bombardier for SS$119.2 million.[138] The trains were assembled in a Changchun Bombardier Railway Vehicles Company facility[b] in Changchun, with design work done in a Bombardier engineering centre in Hennigsdorf.[139] The first trains arrived in Singapore on 12 October 2012.[134][140] As the DTL is operated under the NRFF, the trains feature LTA’s logo and the agency's blue colours.[141]

The trains are fully automatic and powered by 750V DC third rail power system.[136] Each trainset has a length of 70.1 m (230 ft) and a width of 3.2 m (10 ft), with a maximum operational speed of 80 km/h (50 mph).[5][c] The trains have a service life of 30 years with a design travel distance of 130,000 km (81,000 mi) per year.[139][143] The train design is intended to improve commuters' comfort and convenience, which include an ergonomic curved seat design and perch seats in the gangway for wider standing space.[135][144] The train car bodies are constructed from high-capacity aluminium, allowing 90 per cent of the material to be recycled at the end of their service life. The trains are also equipped with regenerative braking and lightweight converters, reducing overall weight and electricity consumption of about 2,000 MWh per year.[144]

The trains are fitted with load sensors that detect passenger weight. This data is used for the Passenger Load Information System, which displays crowding levels in each car on LCD screens at station platforms.[145][146][147] Four trains of the fleet are equipped with Automatic Track Inspection (ATI) – a system of cameras, lasers, and sensors that can detect defects such as rail cracks or missing fasteners.[148][149]

The DTL also has a fleet of maintenance vehicles, including battery-electric locomotives from CSR Zhuzhou Electric Locomotive Co. Ltd,[150] [151] general maintenance vehicles from Gemac Engineering Machinery, rail grinding vehicles from Harsco Rail,[152] and multifunction vehicles from MERMEC.[153] SBS Transit also deploys a rail rover that not only checks for internal cracks or other track flaws, but also tunnel cracks, water leaks or other structural anomalies. The rover is equipped with 3D cameras and laser sensors.[154]

Depot

[edit]

Gali Batu Depot, located at the northwestern end of the DTL beyond Bukit Panjang station, houses the line's train fleet.[155] Built by a joint venture between GS Engineering and Construction and Hock Lian Seng Infrastructure for S$410 million,[156][157] the 27 ha (67-acre) depot includes the line's Operation Control Centre (OCC) which oversees and controls the line's operations.[158] Before the completion of Gali Batu Depot, a temporary OCC was established at the CCL Kim Chuan Depot.[159] The DTL trains were also temporarily stabled at Kim Chuan.[160]

The at-grade depot was initially built for 42 three-car trains, before being expanded to accommodate 81 trains. It comprises 18 ancillary buildings and a seven-storey administrative and workshop block, providing stabling, maintenance, operational and support facilities for DTL operations.[156][158] Other facilities include an automated storage and retrieval system for maintenance materials, equipment and spare parts, as well as an automated train wash plant.[161] A Siemens signalling simulation centre has also been established at the depot, enabling rigorous software patch testing by LTA and the rail operator prior to deployment on the main line.[162][163]

The Tai Seng Facility Building is two-level underground structure measuring 52 metres (171 ft) in width and 295 metres (968 ft) in length, housing maintenance, operation and staff facilities for DTL3.[164] The East Coast Integrated Depot (ECID), which is expected to be completed by 2026,[165] will also include an underground section that can house 75 DTL trains.[166][167]

Signalling

[edit]

The DTL is fully automated (at GoA4 level)[168][169] and is run by Siemens Trainguard Sirius Communications-based train control (CBTC) moving block system,[136][170] which includes a fallback signalling system.[171] The subsystems consist of Automatic train protection (ATP), Controlguide Rail 9000 Automatic Train Supervision (ATS), and Westrace Computer-based interlocking (CBI) system.[172][173][174] The signalling contract was originally awarded to Westinghouse Brake and Signal Holdings for $287.5 million in November 2008.[136][5][d]

The Sirius CBTC system operates on a 2.4 GHz radio frequency and is configured for driverless Unattended Train Operation (UTO). Each train is equipped with a fully redundant speed and location system incorporating Doppler radar, axle-mounted tachogenerators and absolute position reference beacon readers.[177] The Sirius hardware platform can be configured for manned operation, driverless attended operation (DTO) or UTO. The UTO builds upon the manned system but imposes significantly more stringent requirements. Any failure of the automatic functions in a manned system can be mitigated by the train operator taking control. However, the UTO system incorporates extensive redundancy to ensure that trains can continue operating automatically without onboard intervention. In the event of total failure of automatic train operation, a “creep mode” allows the control centre operator to move the train to the next station under CBTC protection.[178]

The Westrace CBI is custom-configured to meet LTA's signalling principles, and it is designed to function with primary train detection via track circuits, which also provide speed codes to allow trains to revert to conventional operation if the CBTC system fails.[178] The SystematICS platform hosts the ATS functions, which comprise a suite of software modules selected according to LTA's requirements. For the DTL, additional modules were developed to suppor UTO. The Integrated Supervisory Control System (ISCS) provides the ATS displays at the operations control centre and passenger service centre multifunctional terminals.[179]

Station facilities

[edit]

All DTL stations are wheelchair-accessible. A tactile system, consisting of tiles with rounded or elongated raised studs,[180] guides visually impaired commuters through the station, with dedicated routes that connect the station entrances to the platforms or between the lines. Wider fare gates allow easier access for wheelchair users into the station.[181] Platform screen doors (PSDs) along the line were installed by Westinghouse Signal (Invensys Rail Group), supplied by Faiveley.[175][182] The PSDs provide safety for passengers, offering protection from arriving and departing trains.[136]

Fifteen DTL stations are designated Civil Defence (CD) shelters.[183][e] These stations, which are to be activated in times of national emergency, feature the reinforced steel blast doors and decontamination chambers to protect against chemical attacks.[184]

Culture

[edit]

Architecture

[edit]
DTL station architecture
Bencoolen station with curved walls in earth-tone colours. It is the deepest station at 43 m (141 ft) deep.
Little India station adopted a flowing fabric theme reminiscent of the Indian sari to reflect the vicinity's heritage.
Fort Canning station has a natural green theme. Abstract patterns of the former National Theatre are featured on the concourse stone walls and railings.

The DTL features two of the deepest stations on the MRT network – Promenade and Bencoolen at 43 m (141 ft) deep.[185][f] Stevens station, which has a depth of 34.22 metres (112.3 ft),[187] has a stacked platform arrangement due to limited space constraints by the nearby flyover and canal.[188][189]

The curving interior walls of Bencoolen station are meant to resemble canyon walls, while earth-tone colours were used to represent the many layers of the soil,[190] emphasising the depth of space.[59] The glass walls of the passenger lifts are tinted in maroon, making the descent to the platforms appear as a descent to the Earth's core.[59][190] The six-level underground station was constructed at such a depth to avoid the existing infrastructure at the surface, as well as the other rail tunnels in the way of the alignment.[59][58] The station, designed by Aedas, is only 22 metres (72 ft) wide and 140 metres (460 ft) long, as the distance between the buildings along the street is 25 metres (82 ft) wide.[59]

According to Paul Fok, the LTA's Group Director of Infrastructure and Design Engineering, the station designs also reflect the heritage and culture of their surrounding areas where possible.[191] The interior of Botanic Gardens station incorporates touches of nature with green palettes that reflect the design concept of flora and fauna.[120] Little India station was designed by Architects61, which adopted a flowing fabric theme reminiscent of the Indian sari to reflect the vicinity's heritage.[192][193] To reflect its location near the Fort Canning Park, Fort Canning station has a natural green theme with an arched ceiling over the station's interior. As a tribute to the former National Theatre that once stood near the station site, abstract patterns of the theatre are featured on the concourse stone walls and railings.[194][195][196]

Artworks

[edit]

Thirty-three artworks have been installed along the DTL as part of the Art-in-Transit programme.[197][198] Each artwork must not only be integrated into the station's architecture,[191] but also capture commuters’ attention and sustain the engagement of regular passengers as they pass through the station.[199] For this collection, LTA appointed four curators – Bridget Tracy Tan, June Yap, Patrick Chia and Hanson Ho. Each artist worked with a curator during the commissioning of the artwork. The Art Review Panel[g] oversaw each artist's proposal and also ensured the final work met the programme's objective.[200]

Artwork list[197]
Station code Station name Artwork name Artist(s)
 DT1 – BP6  Bukit Panjang Punctum of the Long Hills John Clang
 DT2  Cashew Project Eden Donna Ong
 DT3  Hillview What Remains Darren Soh
 DT4  Hume Continuity André Wee
 DT5  Beauty World Asemic Lines Boedi Widjaja
 DT6  CR15  King Albert Park The Natural History of Singapore's Mythical Botanic Creatures Soh Pei Ling, Chan Mei Hsien & Long Yinghan (Artists Caravan)
 DT8  Tan Kah Kee Gratitude (饮水思源) and Resilience (自强不息) Hwa Chong Institution
 DT9  CC19  Botanic Gardens What is a tree? Shirley Soh
 DT10  TE11  Stevens PIN – 23040 Om Mee Ai
 DT11 – NS21  Newton Newton Tan Zi Xi
 DT12  NE7  Little India Woven Field Grace Tan
 DT13  Rochor Tracing Memories LASALLE College of the Arts
 DT14  EW12  Bugis Ephemeral Patrick Chia
 DT15  CC4  Promenade Earthcake Ana Prvacki
 DT17  Downtown Leaves Jason Lim
 DT18  Telok Ayer Charm of Bay Lim Shing Ee
 DT19  NE4  Chinatown Flying Colours Cheo Chai-Hiang
 DT20  Fort Canning Through His Eyes Lim Tze Peng
 DT21  Bencoolen Tracing Memories Nanyang Academy of Fine Arts
 DT22  Jalan Besar A Kaleidoscopic World Lydia Wong
 DT23  Bendemeer And A New World Cristene Chang
 DT24  Geylang Bahru Constructed Memories Marienne Yang
 DT25  Mattar Agar Panel Genevieve Chua
 DT26  CC10  MacPherson Trails of Thoughts Aminah Mohd Sa'at (Neng)
 DT27  Ubi Staple Zainudin Samsuri
 DT28  Kaki Bukit Welcome to Kaki Bukit Hans Tan
 DT29  Bedok North Dedaun Masa (Leaves of Time) Ahmad Abu Bakar
 DT30  Bedok Reservoir Somewhere Else Ng Chee Yong
 DT31 
 DT33  		Tampines West
Tampines East		 Welcome to Jingapore! Jing Quek
 DT32 – EW2  Tampines The Big Round & The Tall Long Studio Juju
 DT34  Upper Changi I Am Anonymous Boo Junfeng
 DT35  CG1  Expo A Banquet Yeo Chee Kiong

Notes

[edit]
  1. ^ The 21 km (13 mi) Eastern Regional Line (ERL) was first announced by transport minister Raymond Lim in January 2008 and would serve Tanjong Rhu, Marine Parade, Siglap, Bedok South and Upper East Coast.[90][91]
  2. ^ A joint venture between Bombardier and CNR Changchun Railway Vehicle Company.[139]
  3. ^ The trains have a maximum design speed of 90 km/h (56 mph).[142]
  4. ^ Westinghouse Brake and Signal Holdings was succeeded by Invensys Rail,[175] which was acquired by Siemens in 2013.[176]
  5. ^ The CD stations are Bukit Panjang, Cashew, Hillview, Beauty World, King Albert Park, Sixth Avenue, Tan Kah Kee, Geylang Bahru, Bedok North, Bedok Reservoir, Tampines West, Tampines, Tampines East, Upper Changi and Expo.[183]
  6. ^ LTA initially listed Promenade station's depth at 42 m (138 ft).[186]
  7. ^ The Panel was chaired by Milenko Prvacki and included artist and educator Ho Hui May, architect Raymond Woo, arts administrator Low Eng Teong, editor Angeline Ang, curators Ahmad Mashadi and Seng Yu Jin, and art collectors Daniel Teo and Mae Anderson.[200]

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