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The East West Line (EWL) is the second Mass Rapid Transit line in Singapore. The line is currently Template:Convert long with 35 stations,[1] including four stations under construction and to be completed by the summer of 2017, known as the Tuas West Extension (TWE), making it the longest MRT line in Singapore. It currently takes about 70 minutes to travel from one end to the other (Pasir Ris to Joo Koon). The line is coloured green on MRT system maps.

OverviewEdit

As its name implies, the line connects central Singapore to both eastern and western parts of the island, with an additional branch to Changi Airport from Tanah Merah, which is operated as a separate shuttle service. There is a short tunnel between Kembangan and Bedok where the line ascends into the hill at Siglap, and there is a longer tunnel due to the space limitations between Kallang and Redhill. The line passes through the centre median of roads in Tanah Merah, Bedok, Queenstown, Commonwealth, Dover and Clementi. It takes commuters to stations near schools such as Nanyang Technological University and Singapore Polytechnic and places of interest like Jurong Bird Park and Science Centre, and skirts past the three rivers (Singapore River, Rochor River and Kallang River).

Originally, East West Line had a short-working trip that terminated at Tanah Merah after peak hours, easier to clear but was a rare case from 2011 to 2013 (after that all trains were running to fixed schedules). There was a through connection to the Changi Airport before it changed to a shuttle service from 22 July 2003.

EWL is currently the only line connecting east and downtown, until the Downtown Line opens in 2017.

HistoryEdit

The East West Line is the second line to be built, when the City Hall to Outram Park segment was opened on 12 December 1987, with through services to Yio Chu Kang. It was extended to Clementi on 12 March 1988 and to Lakeside on 5 November 1988. Additionally, the eastern extension to Tanah Merah was opened on 4 November 1989 (when the current name was adopted to reflect the operational split from the North South Line), and to Pasir Ris on 16 December 1989. The last station of the original system, Boon Lay opened on 6 July 1990. On 18 October 2001 Dover station was opened, and then on 25 February 2002 the Expo and Changi Airport stations were opened. On 28 February 2009 the Pioneer and Joo Koon stations were officially opened to the public.

Tuas West Extension (TWE)Edit

On 11 January 2011, the Tuas West Extension was announced. It is an extension of the East West Line from Joo Koon to Tuas Plaza, and consists of a 7.5 km long twin-tracked MRT viaduct, four aboveground stations and a 26-hectare depot to provide stabling and maintenance facilities for the additional trains that will be bought for the extension and to cater for future expansion of the line.[2] The viaduct is integrated with part of a 4.8km long road viaduct along Pioneer Road, which will increase the road capacity to cope with anticipated increase in traffic. The stations — Gul Circle, Tuas Crescent, Tuas West Road and Tuas Plaza — will extend MRT connectivity to the Tuas area. When opened, the extension is expected to serve more than 100,000 commuters daily.[3]

On 4 May 2012, the Land Transport Authority marked the start of construction of the Tuas West Extension with a groundbreaking ceremony at the site of the future Tuas Plaza station.[3]

On 26 October 2016, it was announced that that the stations will be opened in the second quarter of 2017 instead, so that the stations on the extension can take advantage of the new CBTC signalling system, which is being implemented on the North South and East West lines. On 27 April 2017, the Tuas West Extension was officially announced to open on 18 June 2017.[4][5]

Half-height platform screen door installationsEdit

There were calls for platform screen doors to be installed at above-ground stations after several incidents in which passengers were killed or seriously injured by oncoming trains when they fell onto the railway tracks at above-ground stations. Underground stations already featured the doors since 1987. The authorities initially rejected the proposal by casting doubts over functionality and concerns about the high installation costs,[6] but made an about-turn when the government announced plans to install half-height platform screen doors on the above-ground stations in January 2008, citing lower costs due to its becoming a more common feature worldwide.[7] They were first installed at Jurong East and Pasir Ris stations in 2009 as trial runs.[8] Installation of platform screen doors began at Clementi and Lakeside stations on April 2010. On 31 August 2011, the last station, Expo, began installation of half-height platform screen doors.[9]

Timeline of Stations Opened Edit

StationsEdit

Station Name Interchange/Notes
Pasir Ris 
TampinesDowntown Line (under construction)
Simei 
Tanah MerahChangi Airport Branch Line
Bedok 
Kembangan 
Eunos 
Paya LebarCircle Line
AljuniedLunch Time Xpress terminus
Kallang 
Lavender 
BugisDowntown Line
City HallNorth South Line
Raffles PlaceNorth South Line
Tanjong Pagar 
Outram ParkLunch Time Xpress terminus
North East Line
Thomson Line (under construction)
Tiong Bahru 
Redhill 
Queenstown 
Commonwealth 
Buona VistaCircle Line
Dover 
Clementi 
Jurong EastNorth South Line
Chinese Garden 
Lakeside 
Boon Lay 
Pioneer 
Joo Koon 
Tuas West Extension (TWE) (opening 2017)
Gul Circle(under construction)
Tuas Crescent(under construction)
Tuas West Road(under construction)
Tuas Plaza(under construction)
Changi Airport Branch Line (CAL)
Tanah Merah 
ExpoDowntown Line (under construction)
Changi Airport 

SMRT used to operate the branch sector of Tanah Merah to Changi Airport as a through line from Boon Lay from 18 November 2001 until 22 July 2003, when it was replaced with a shuttle service.[10] SMRT operates a through line from Joo Koon to Changi Airport only when train services are disrupted between Tanah Merah and Pasir Ris, with peak-hour trains being withdrawn at Tanah Merah.

Similarly to the preceding Circle and Downtown MRT Lines announced earlier, the four stations along the Tuas West Extension were open for public consultation from 16 December 2011 to 15 January 2012. The finalised station names were announced on 13 April 2012.[11]

Rolling stockEdit

Four batches of rolling stock are in service on the line, C151, C651, C751B, C151A and the upcoming C151B. These trains operate from the two depots along the line, the Ulu Pandan Depot near Jurong East, Changi Depot after Tanah Merah and at the new Tuas Depot near to Tuas Checkpoint.

Train controlEdit

The East West Line is currently equipped with Westinghouse fixed block signalling system with automatic train control (ATC) under automatic train operation (ATO) GoA 2 (STO). The subsystems consist of automatic train protection (ATP) to govern train speed, Automatic Train Supervision (ATS) to track and schedule trains and a relay interlocking system that prevents incorrect signal and track points from being set.

The current signalling system is currently phasing out and will be replaced by a new Thales SelTrac® Communications-based train control (CBTC) moving-block signalling system.[12]

The new signalling system is expected to be operational on various phases - 18 June 2017 for Joo Koon-Jurong East section, 25 August 2017 for Jurong East-Eunos section and 22 September 2017 for Eunos-Pasir Ris/Changi Airport section. Trains will run with Automatic train control (ATC) under Automatic train operation (ATO) GoA 2 (STO).[13] The subsystems consist of automatic train protection (ATP) to govern train speed, NetTrac MT Automatic Train Supervision (ATS) to track and schedule trains and a Computer-based interlocking (CBI) system that prevents incorrect signal and track points from being set.

Automatic platform screen doors by Westinghouse were originally installed when the line opened, and Automatic Platform Screen Gates were later installed on elevated stations except for Tuas West Extensions stations, where they were manufactured by Fangda Group.

External linksEdit

ReferencesEdit

Template:Mass Rapid Transit (Singapore) Template:Singapore railway lines

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