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60-574: It has a capacity of 45 trains and has an area of 130,000 square metres. Train inspections are carried out at this depot. Commuters can have a glimpse of it while on a train between Clementi and Jurong East stations. It is located off Toh Tuck Avenue and sits along Toh Tuck Avenue. The depot is located between Clementi station and Jurong East station on the East West line and has 3 reception tracks: 2 tracks Westbound towards Jurong East station and 1 track Eastbound towards Clementi station. Ulu Pandan Depot

120-543: A KHI C151 train derailed while being withdrawn from service into Ulu Pandan Depot after a defective train axle box dislodged and caused the wheels of a bogie to come off the running rail and hit track equipment, including the third rail and point machines, significantly damaging them and causing a power fault. Equipment damaged includes one train set, 1.6 km of running rails, power supplying third rails and three track point machines. Recovery lasted 6 days, with train services expected to resume on 1st October, making this incident

180-413: A much costlier and more complicated alternative to rope-type screen doors. The only difference from the latter is that they move sideways when letting passengers through. At Osaka Station, the doors are designed as a single block (equivalent to the length of a train car). It consists of five units: one wall-like "parent door" suspended from the top and two sets of glass "child doors". When the train reaches

240-581: A national programme to improve ventaliation at station platforms. Two new link bridges, along with new fare gates and escalators, were built and opened in 2018 to improve connectivity to new flats near the station. Noise barriers were installed along the viaduct stretch from Clementi Road to Clementi station as part of a S$ 17 million (US$ 12.7 million) contract awarded to CKT Thomas Pte Ltd in January 2015. Another set of noise barriers from Clementi Avenue 4 to Lempeng Drive were installed from 2018 to 2020. On

300-562: A new kind of vertical platform screen doors, called platform curtains , are being tested on the platform 2bis of Vanves–Malakoff station (in Paris region) on the Transilien Line N commuter rail line. The experiment should end in February 2021. Transilien said that they preferred platform curtains to classical screen doors for this line because the positioning of the doors is not the same across

360-466: A novelty in the system. All Chinese metro systems have platform screen doors installed on most of their lines. All stations built after the mid-2000s have some form of platform barrier. Guangzhou Metro Line 2 , which opened in 2002, is the first metro system in mainland China to have installed platform screen doors since its completion. The older Guangzhou Metro Line 1 also completed the installation of platform screen doors between 2006 and 2009. Only

420-660: A trial run with Faiveley automatic platform gates installed on a single platform at Vuosaari metro station during phase one of the project. The doors, which are part of the Siemens metro automation project, were built in 2012. Phase 2 of the project has been delayed due to metro automation technical and safety related testings. The doors were removed in 2015. All lines of the VAL automated subway system are equipped with platform screen doors at every station, starting with Lille subways in 1983. Those also include Toulouse and Rennes as well as

480-435: A tunnel's side wall, with "a gate having its ends guided in the guides, the ends and intermediate portions of the gate having rollers engaging the side wall". Pneumatic cylinders with pistons would be used to raise the gates above the platform when a train was in the station. Unlike Shute's invention, the entire platform gate was movable, and was to retract upward. The first stations in the world with platform screen doors were

540-607: Is EW23. Being part of the EWL, the station is operated by SMRT Trains . The station will be a future interchange station with the CRL. The station is located along Commonwealth Avenue West and has four entrances. Surrounding landmarks of the station include the Clementi Mall , Clementi Bus Interchange , Clementi Fire Station, Clementi Polyclinic, Masjid Darussalam, and Clementi Primary School. A mural, Echoes of Clementi by Ashley Goh Yu Ting,

600-513: Is displayed at this station as part of SMRT's Comic Connect – a public art showcase of heritage-themed murals. Commemorating Clementi's multicultural communities and its development from a kampung into a town hub, the work depicts Clementi's various landmarks and flora and fauna that remains in the new town. Automatic platform gate Platform screen doors ( PSDs ), also known as platform edge doors ( PEDs ), are used at some train , rapid transit and people mover stations to separate

660-542: Is due to open in 2035, will have platform screen doors at every station. The Cross River Rail in Brisbane, which is currently under construction and scheduled to open in 2026, will have platform screen doors on the new Boggo Road , Woolloongabba and Albert Street underground stations, and the new underground platforms of Roma Street station . Currently, only the Serfaus U-Bahn uses platform screen doors. Line U2 of

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720-770: Is entrapment between closed platform doors and the train carriage which, if undetected, can lead to fatality when the train begins to move (see § Incidents ). Cases of this happening are rare, and the risk can be minimised with careful design, in particular by interlocking the door system with the signalling system, and by minimising the gap between the closed platform doors and the train body. In some cases active monitoring systems are used to monitor this gap. Half-height platform edge doors, also known as automatic platform gates, are cheaper to install than full-height platform screen doors, which require more metallic framework for support. Some railway operators may therefore prefer such an option to improve safety at railway platforms and, at

780-680: The CDGVAL and Orlyval airport shuttles. Paris Métro 's line 14 from Saint-Lazare to Bibliothèque François Mitterrand was inaugurated in 1998 with platform screen doors manufactured by Faiveley Transport . The new station Olympiades opened with platform screen doors in June 2007. Lines 1 and 4 have been retrofitted with platform edge doors, for full driverless automation effective in 2012 and 2023, respectively. Some stations on Line 13 have had platform edge doors since 2010 to manage their overcrowding, after tests conducted in 2006. Since 30 June 2020,

840-566: The Clementi Mall , the Clementi Bus Interchange , and Clementi Fire Station. Built as part of Phase IA of the MRT system, the EWL station opened on 12 March 1988. An oil spill on the tracks led to two trains colliding at the station on 5 August 1993. The station saw further upgrades, such as new half-height platform doors and fans above the platforms to improve ventilation, as well as new linkways which opened in 2018. In September 2022, it

900-656: The Dalian Metro lines 3, 12, and 13, Wuhan Metro line 1 and Changchun Metro lines 3, 4, and 8 have stations without the platform screen doors on their early lines (As of 21 September 2019 ). However many are starting the process of retrofitting these lines with platform screen gates. In addition, many bus rapid transit systems such as the Guangzhou Bus Rapid Transit also have stops that are equipped with platform screen doors. Platform screen doors are also present in some tram and light rail stops such as

960-504: The East Rail line are equipped with either platform screen doors or automatic platform gates. On the East Rail line, PSDs are installed only at Admiralty , Exhibition Centre and Hung Hom stations. Automatic platform gates have also been installed at Racecourse , Lok Ma Chau , Sha Tin , Sheung Shui , Tai Po Market and Tai Wai . Installation is still in progress or are soon to begin at

1020-557: The Epping to Chatswood railway line were upgraded to rapid transit standard, all being fitted with full-height platform edge doors. In Melbourne, the Metro Tunnel , from South Kensington to South Yarra , due to open in 2025, will have platform screen doors on the underground stations. New rolling stock is being constructed, with doors that will line up with full-height PSDs on the platforms. The fully automated Suburban Rail Loop , which

1080-846: The Sofia Metro Line 1 and Line 2. In total, such rope-type safety barriers will be installed on more 10 of the busiest stations on the Line 1 and 2 of the Sofia Metro , providing increased safety for passengers and protecting against accidental falls. Screen doors are in use at all three LINK Train stations and the Union and Pearson stations along the Union Pearson Express route to Toronto Pearson International Airport in Mississauga, Ontario . Platform screen doors will be installed at all stations on

1140-520: The Vienna U-Bahn is being reconstructed from Schottentor station to Karlsplatz station , with the addition of platform screen doors to the reconstructed stations. The Dhaka Metro Rail uses half-height platform screen doors at all of its elevated stations. Platform screen doors are being installed on Line 3 of the Minsk Metro , which first opened in late 2020, and will be installed at stations on

1200-1086: The Xijiao Light rail , Nanjing tram and Chengdu tram . Several underground high speed railway stations of the CRH network use platform screen doors set back from the platform edge. In addition, Fengxian District in Shanghai installed platform gates at a road crossing. Several stations on Bogota's TransMilenio bus rapid transit system use platform screen doors. The Ayacucho Tram in Medellin also has half-height platform doors at every station. The Copenhagen Metro uses Westinghouse and Faiveley platform screen doors on all platforms. Full-height doors are used on underground stations while surface level stations have half-height doors (except from Lufthavnen and Orientkaj ). Underground stations have had platform doors since opening, while above ground stations on lines 1 and 2 did not initially, and were installed later. The Helsinki Metro had

1260-535: The platform from train tracks, as well as on some bus rapid transit , tram and light rail systems. Primarily used for passenger safety, they are a relatively new addition to many metro systems around the world, some having been retrofitted to established systems. They are widely used in newer Asian and European metro systems, and Latin American bus rapid transit systems. The idea of platform edge doors dates from as early as 1908, when Charles S. Shute of Boston

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1320-542: The rolling stock , and that they plan to install them in other Transilien stations if the experiment is successful. Paris is now getting a new urban revolution : The Grand Paris Express . As of it, every new stations are getting brand new full platform screen doors, and it begins with the Line 14 extension inaugurated in 2024, from Saint-Denis pleyel to Orly Airport. People movers at Frankfurt International Airport , Munich International Airport and Düsseldorf Airport are equipped with platform screen doors, as well as

1380-503: The Buona Vista and Clementi stations, trains at Buona Vista were not allowed to depart until the train at Clementi left; this restriction was lifted on 8 August. An independent inquiry panel concluded that a damaged maintenance locomotive spilled oil on the tracks the morning of the crash. While workers were aware of the spill, the cleaning crew were delayed from accessing the tracks. Ten trains had experienced braking issues leading up to

1440-575: The Clementi police headquarters and the neighbourhood police centre were relocated to Lempeng Drive. The contract for the construction of tunnels between this station and Maju station was awarded to Sinohydro Corporation Limited (Singapore Branch) for S$ 199 million (US$ 148.51 million) in August 2024. Clementi station serves the EWL and is between the Jurong East and Dover stations. The official station code

1500-558: The East Rail Line which used platform screen doors manufactured by Fangda Group. The opening of the Sunny Bay and Disneyland Resort stations in 2005 also meant the first platform-edge doors entering operation for the MTR network. These doors are currently the lowest in the entire network of being at around 1.2 m (3 ft 11 in) high, compared to 1.55 m (5 ft 1 in) on

1560-629: The Montreal Metro, with the older MR-73 trains having 4 doors on each side of the car, and MPM-10 having 3, it is unlikely platform doors will be showing up in the Montreal Metro until the retirement of the MR-73 fleet. In June 2023, the operator of the Vancouver SkyTrain , TransLink announced a feasibility study into installing platform screen doors on the Expo and Millennium lines. Such installation

1620-506: The advent of the REM on the horizon, calls to retrofit platform edge doors in the Montreal Metro to combat delays arising from overcrowding are becoming more common. If full-height doors were to be installed, it may reduce the difficulty in opening station entrance doors at ground level due to the pressure imbalance caused by passing trains. Given that there are two different train door layouts on

1680-493: The completion of MRT Phase I to increase Phase I's catchment area . The contract for the construction of Clementi station and 2 kilometres (1.2 miles) of viaducts was awarded to a joint venture between Lim Kah Ngam Construction and Aoki Corporation for S$ 48.7 million ( US$ 66 million in 2022) in April 1985. The station opened for a public preview on 27 and 28 February 1988, before operations commenced on 12 March that year. On

1740-455: The construction of Clementi CRL station was awarded to a joint venture between China Communications Construction Company Limited (Singapore Branch) and Sinohydro Corporation Limited (Singapore Branch) for S$ 514 million (US$ 383.58 million) in October 2023. Construction of the new station was scheduled to begin in 2024 and be completed in 2032. To facilitate the construction of the new CRL station,

1800-562: The cost of installation and to deal with the problem of different train types and distances between car doors. The first-ever full-height variable screen doors were installed on the underground platforms of Osaka Station , which opened in March 2023, but a few half-height variants can be found on a set installed at the Shinkansen platforms of Shinagawa Station in Tokyo . Their use is rare since they are

1860-474: The crash. The stalled train used its emergency brakes to stop at Clementi station and needed to recharge its brake systems before moving off. The automatic braking system of the subsequent train failed to prevent the collision. As MRT staff had followed procedures, none faced disciplinary action as a result of the crash. The inquiry recommended increased inspections of locomotives and for the station master to look out for oil spills on tracks. On 25 September 2024,

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1920-538: The deep-level tunnels between stations, while the station vaults are dug out manually and contain both the tracks and the platform. However, in the case of the Saint Petersburg Metro, the TBMs bored a pair of continuous tunnels that passed through ten stations, and the stations themselves were built in vaults that only contained the platform, with small openings on the sides of the vault, in order for passengers to access

1980-591: The end of 2021, as well as all stations of line 5 by the end of 2020. PSDs are also found on the tube stations of the RIT BRT and in the Santos Light Rail since 2016. Half-height platform screen doors are in use on all stations of the Sofia Metro Line 3. In 2020, rope-type screen door (RSD) system was installed in Vasil Levski Stadium Metro Station and Opalchenska Metro Station of

2040-549: The expansion of Ulu Pandan Depot, with LTA commissioning an engineering study in 2015. This Singapore MRT -related article is a stub . You can help Misplaced Pages by expanding it . Clementi MRT station Clementi MRT station is an elevated Mass Rapid Transit (MRT) station on the East–West Line (EWL). Located in Clementi , Singapore , the station is located along Commonwealth Avenue West and serves landmarks such as

2100-407: The first station to receive platform screen doors from this programme in August 2001. The Mass Transit Railway became the first metro system in the world to retrofit PSDs on a transit system already in operation. The program was completed in March 2006. All subsequent new stations or platforms installed with PSDs also used those manufactured by Gilgen Door Systems, until the cross-harbour extension of

2160-465: The forthcoming Ontario Line . In addition, as a part of major renovations and expansions to the Bloor-Yonge interchange, platform screen doors will be installed on both Line 1 platforms. The doors will also be installed on the Line 2 platforms once CBTC signalling upgrades are made to the line. The addition of such doors at Bloor-Yonge has prompted rumours of a broader system wide rollout, including in

2220-580: The forthcoming Scarborough Subway Extension and Yonge North Subway Extension , though no confirmation or funding has been announced by the Toronto Transit Commission or the Government of Ontario . Greater Montreal's forthcoming Réseau express métropolitain (REM), the 67-kilometre-long driverless complementary suburban rapid transit network opening in five phases between 2023 and 2027 will feature screen doors at each of its 26 stations. With

2280-480: The kind of rolling stock that may be used on a line, because the train doors must fit the spacing of the platform doors, which can result in additional costs, due to the otherwise unnecessary purchase of new rolling stock and consequent depot upgrades. Despite delivering an overwhelming improvement to passenger safety at the platform-train interface, platform screen doors do introduce new hazards which must be carefully managed in design and delivery. The principal hazard

2340-598: The later sections of the line. The Platform Screen Doors are present in the São Paulo Metro since 2010, when the Sacomã Station was opened. As of 2019, five of the six lines of the São Paulo Metro have the equipment: Lines 4 - Yellow , 5 - Lilac and 15 - Silver have the equipment installed in all of its stations. The feature is also present in some stations of Line 2 - Green and Line 3 - Red . They are planned to be installed in 41 stations of lines 1, 2 and 3 by

2400-530: The longest breakdown in Singapore history. The station was first announced to interchange with the Cross Island line (CRL) on 20 September 2022 by Transport Minister S Iswaran. The CRL platforms will be constructed as part of CRL Phase 2, a 15-kilometre (9.3 mi) segment spanning six stations from Turf City to Jurong Lake District station. The station is expected to be completed in 2032. The contract for

2460-425: The morning of 5 August 1993, two trains collided at the station after one became stalled at the station due to a technical fault. The crash left 156 people injured, eight of them seriously. The trains were taken out of service while engineers conducted checks on signalling equipment at the Clementi, Buona Vista, and Commonwealth stations. MRT operations resumed the next day. For further engineering checks between

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2520-453: The older stations to reduce suicides on the MTR and reduce air-conditioning costs. Platforms 2 and 3 of Choi Hung were chosen for the trial due to them being redundant platforms and receiving low numbers of passengers. Platform screen doors of two and a half cars' length were installed on each of the two platforms during the trial in 1996. As the Kwun Tong line trains consisted of eight cars, it

2580-469: The ones installed on the Disneyland Resort line. There are also rope-type platform screen doors at stations where a number of train types, with different lengths and train door spacings, use the same platforms. The barriers move upwards, rather than sideways, to let passengers through. Some Japanese, Korean, Chinese and Eastern European countries have stations that use rope-type screen doors, to lower

2640-548: The opening day, Clementi station was the most visited station among the Phase IA stations, with 80,000 recorded trips and 125,618 passengers. In 2012, half-height platform screen doors was installed at this station as part of the Land Transport Authority 's (LTA) programme to improve safety in MRT stations. High-volume low-speed fans were installed above the platforms of the station between 2012 and 2013 as part of

2700-426: The platform edge onto the railway tracks . But they sometimes reach to the height of the train. Like full-height platform screen doors, these platform gates slide open or close simultaneously with the train doors. These two types of platform screen doors are presently the main types in the world. The doors help to: Their primary disadvantage of PSDs is their cost. When used to retrofit older systems, they can limit

2760-486: The project did not require foreign expertise, it was therefore limited to local and foreign contracts registered under the Construction Development Industry Board as well as undertaken projects worth at least S$ 5 million (1985) ( US$ 2.27 million). The contract expected Hiap Shing to build a drainage system and to clear the site for construction within 9 months. In October of the same year, it

2820-400: The remaining stations. Automatic platform gates are currently only used in at-grade and elevated stations, while platform screen doors are used in all underground and some at-grade or elevated stations. None of the light rail platforms have platform screen doors or automatic platform gates installed. The MTR Corporation had since mid-1996, been studying the feasibility of installing PSDs at

2880-538: The same time, keep costs low and non-air-conditioned platforms naturally ventilated. However, these gates are less effective than full platform screen doors in preventing people from intentionally jumping onto the tracks. These gates were first in practical use by the Hong Kong MTR on the Disneyland Resort line for the open-air station designs. Most half-height platform edge door designs have taller designs than

2940-401: The station floor and ceiling, while the half-height platform screen doors are referred to as platform edge doors or automatic platform gates , as they do not reach the ceiling and thus do not create a total barrier. Platform gates are usually only half of the height of the full-screen doors, are chest-height sliding doors at the edge of railway platforms to prevent passengers from falling off

3000-475: The station, a special scanner on the platform reads the information on the ID tag placed on the train to identify its type and the number of cars. With the type and the number of cars having been instantly identified, each unit will slide automatically to match the configuration of the stopped train. The parent and child doors then slide into the optimal position to align precisely with the position of each car door. Since

3060-776: The suspended monorail in Dortmund , called H-Bahn . Plans are underway to test platform screen doors on the Munich U-Bahn in 2023 and line U5 & U6 will be installed in late 2026. All stations on the forthcoming line U5 on the Hamburg U-Bahn will feature full-height platform screen doors. Platform screen doors will be used on the driverless Thessaloniki Metro , which opens in November 2023 and in Line 4 of Athens Metro . Currently, all heavy rail and medium-capacity railway platforms outside

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3120-757: The technology is still new, such doors are still going through testing phases in several countries around the world. Line D of the Buenos Aires Subte is planned to have platform screen doors installed in the future, after the communications-based train control (CBTC) system has been installed. Sydney Metro , which opened in May 2019, was the first-fully automated rapid transit rail system in Australia. There are full-height screen doors on most underground platforms, with full-height edge doors on at-grade, elevated and some underground platforms. The existing five stations on

3180-487: The ten stations of the Saint Petersburg Metro 's Line 2 that opened between 1961 and 1972. The platform "doors" are actually openings in the station wall which supports the ceiling of the platform. The track tunnels adjoining the ten stations' island platforms were built with tunnel boring machines (TBMs), and the island platforms were located in a separate vault between the two track tunnels. Usually, TBMs bore

3240-523: The trains in the tunnels. Singapore 's Mass Rapid Transit , opened in 1987, is often described as the first heavy Metro system in the world to incorporate PSDs into its stations for climate control and safety reasons, rather than architectural constraints, though the light Lille Metro , opened in 1983, predates it. Although the terms are often used interchangeably, platform screen doors can refer to both full-height and half-height barriers. Full height platform screen doors are total barriers between

3300-735: Was announced that the JDC Corporation and Jurong Engineering won the S$ 79.58 million (1985) ( US$ 36.17 million) contract to build Ulu Pandan Depot and Jurong East station along with 3.2 kilometres (2.0 mi) of viaducts from Ulu Pandan Depot to Jurong East station. The contract for Ulu Pandan Depot's fire protection and electrical services was awarded to a joint venture between the Resources Development Corporation and Sato Kogoyo Co Ltd for S$ 92 million (1986) ( US$ 42.25 million) in March 1986. Plans have also been made for

3360-472: Was announced that the station would become an interchange station with the Cross Island Line (CRL) as part of Phase 2 of the line. Clementi station was first constructed as part of Phase IA of the MRT system, a 8.5-kilometre (5.3-mile) segment which spans from Tiong Bahru to this station. Initially planned to be built as part of Phase II, this segment was targeted to be completed in 1988, right after

3420-688: Was decided that the PSDs were to be removed to allow for smoother train operations. With the opening of the Tung Chung line and Airport Express , Hong Kong had its first full-height PSDs fully operational in 1998. The MTR decided in 1999 to undertake the PSD Retrofitting Programme at 74 platforms of 30 select underground stations on the Kwun Tong , Island , and Tsuen Wan lines . 2,960 pairs of PSDs were ordered from Gilgen Door Systems. Choi Hung became

3480-535: Was first mentioned in Contract 204, which detailed the construction of Clementi station as well as elevated links to the depot. It was awarded to a joint venture between Lim Kah Ngam construction and the Aoki corporation . In August 1985, it was announced that Hiap Shing Construction had won the contract for Ulu Pandan Depot's earthworks at S$ 2.67 million (1985) ( US$ 1.21 million), beating eleven other contractors. Since

3540-450: Was granted a patent for "Safety fence and gate for railway-platforms". The invention consisted of "a fence for railway platform edges", composed of a series of pickets bolted to the platform edge, and vertically movable pickets that could retract into a platform edge when there was a train in the station. In 1917, Carl Albert West was granted a patent for "Gate for subrailways and the like". The invention provided for spaced guides secured to

3600-509: Was previously deemed infeasible, due to SkyTrain's diverse fleet and different door positions. However, with the acquisition of the Alstom Mark V trains , which will replace the ageing Mark I , the door positions allow for a feasibility study to proceed. The results will be released sometime in 2025. Platform edge doors are currently in use at Lines 3 and 6 of the Santiago Metro , being

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