An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive , as electric traction motors are incorporated within one or a number of the carriages. An EMU is usually formed of two or more semi-permanently coupled carriages, but electrically powered single-unit railcars are also generally classed as EMUs. The great majority of EMUs are passenger trains, but versions also exist for carrying mail.
41-535: The Alstom Metropolis C751A is the first generation of communications-based train control (CBTC) electric multiple unit rolling stock in operation on the North East line (NEL) of Singapore's Mass Rapid Transit (MRT) system since 2003. 25 trainsets were purchased for the line. In February 1997, the Land Transport Authority (LTA) of Singapore shortlisted several rolling stock companies for
82-405: A five-digit serial number by the rail operator SBS Transit . A complete six-car trainset consists of an identical twin set of one driving trailer (DT) and two motor cars (Mi & Mp) permanently coupled together. For example, set 7013/7014 consists of cars 71013, 72013, 73013, 73014, 72014 and 71014. Electric multiple unit EMUs are popular on commuter, and suburban rail networks around
123-672: A middle window cut out, unlike the newer driverless trains in the MRT system. This is because it had to make way for the old detrainment ramp, which was not as compact as that of the newer Alstom Metropolis models on the North East line and the Circle line . Platform gap reducers were since added to all C751A trains. All C751A trains consist of the Visual Passenger Information System (VPIS). These displays show
164-478: A new LTA LCD Dynamic Route Map Display (DRMD) located above each door will be retrofitted. These DRMDs will be similar to those on newer MRT trains such as the T251 and R151 . In addition, Air-conditioning & ventilation systems will be upgraded. The exterior livery design will be retained with the exception of Land Transport Authority logos. Smaller SBS Transit logos are located on the gangway ends of each car in
205-410: A similar fashion to LTA's earlier corporate livery designs. Works are expected to be completed by Q1 2026. The first refurbished train set (7013/7014) re-entered passenger service on 28 February 2022. The coupling configuration of a C751A in revenue service is DT–Mp–Mi+Mi–Mp–DT. The car numbers of the trains range from 7x001 to 7x050, where x depends on the carriage type. Individual cars are assigned
246-648: Is the only MRT line in Singapore using the overhead catenary electrical system while the rest of Singapore's MRT uses the third rail. The DTL currently spans 41.9 km and 34 stations as of October 2017, running from Bukit Panjang station in the north-west to Expo station in the east via the Central Area . The DTL is fully automated and driverless as well and consists of a fleet of 92 Bombardier Movia C951/C951A trainsets. Out of three LRT lines in Singapore, two are operated and maintained by SBS Transit, namely
287-472: The Albion Viking VK , Mercedes-Benz LP1113 and OF1413 and Nissan Diesel RX102K3 with small numbers of Ford R192 and 226 , Seddon , Fargo-Kew , Bedford and Austin . Most of these buses were bodied by local coachbuilder Soon Chow although some were bodied by other companies such as Supreme Star and Strachan. Subsequent models that were purchased by SBS included Berliet and Guy Victory in
328-589: The Budd Metroliner . EMUs powered by fuel cells are under development. If successful, this would avoid the need for an overhead line or third rail . An example is Alstom ’s hydrogen -powered Coradia iLint . The term hydrail has been coined for hydrogen-powered rail vehicles. Many battery electric multiple units are in operation around the world, with the take up being strong. Many are bi-modal taking energy from onboard battery banks and line pickups such as overhead wires or third rail. In most cases
369-625: The Downtown MRT line on 22 December 2013. SBS Transit had operated the majority of routes in almost all areas of Singapore with the notable exception of Tuas, Joo Koon, Jurong West, Jurong East, Bukit Batok, Choa Chu Kang, Bukit Panjang, Woodlands, Sembawang, Yishun, Punggol, Tengah and Pasir Ris, where some routes were under SMRT Buses , Tower Transit Singapore (Bulim Bus Package) and Go-Ahead Singapore (Loyang Bus Package). As of September 2023, there are 222 wheelchair-accessible bus services that SBS Transit operates. SBS Transit later became
410-516: The Leyland Olympian , Volvo Ailsa B55 , Scania BR112DH , Dennis Dominator , Dennis Trident 3 , Mercedes-Benz O305 and Volvo B10MD Citybus . In 1984, SBS purchased another 200 Leyland Olympian and 200 Mercedes-Benz O305 double-decker buses. SBS also conducted an evaluation of air conditioned buses (namely the ex-Singapore Airport Bus Services Mercedes-Benz OF1413 coaches) that year and conducted similar trials with other bus models like
451-681: The Lille Metro since 1983, the Vancouver Skytrain since 1985 and the Kelana Jaya Line and Paris Metro Line 14 since 1998), the NEL is the first application of a fully automated and driverless metro system with heavy rail characteristics such as an overhead catenary (in contrast to earlier systems using third rail ) and 1,435 mm standard-gauge (in contrast to earlier systems featuring smaller rail profiles). Till today, it
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#1732775258683492-741: The Sengkang LRT line and North East MRT line . On 29 March 2003, DelGro Corporation merged with Comfort Group to form ComfortDelGro Corporation . ComfortDelGro Corporation owns 75% of the shares in SBS Transit. On 18 January 2003, SBS Transit commenced operating the Sengkang LRT, followed by the North East MRT line on 20 June the same year. SBS Transit commenced operating the Punggol LRT on 29 January 2005, followed by
533-526: The Sengkang LRT line and Punggol LRT line (SPLRT). These lines serve a total of 29 stations and provide feeder connections to Sengkang and Punggol stations, the two northernmost stations of the North East Line. As of 2016, these lines use a fleet of 57 sets comprising two series of Mitsubishi Heavy Industries Crystal Mover APMs (namely the C810 and C810A ), a number expected to increase in
574-622: The South Side Elevated Railroad (now part of the Chicago 'L' ) in 1897. In 1895, derived from his company's invention and production of direct current elevator control systems, Frank Sprague invented a multiple unit controller for electric train operation. This accelerated the construction of electric traction railways and trolley systems worldwide. Each car of the train has its own traction motors: by means of motor control relays in each car energized by train-line wires from
615-548: The 1960s in 1971) agreed to merge their operations with each taking shareholdings of 53%, 19% and 28% respectively in the new company. The government-sanctioned merger was undertaken to improve service standards of the bus transport system. The company was replaced by the Singapore Bus Service (1978) Limited on 17 February 1978, which was then listed on the Stock Exchange of Singapore (SES) on 26 June
656-705: The 1970s and the Volvo B57 and Mercedes-Benz OF1417 in the 1980s, the latter which were bodied by foreign coachbuilders like New Zealand Motor Bodies and Hawke Coachwork . In 1976, SBS purchased its first 20 Leyland Atlantean AN68 buses to evaluate the suitability of double-decker bus operation, with the buses first entering service on 13 June 1977. Following the success of the trial, SBS ordered another 500 Leyland Atlantean AN68 buses from 1978 up to 1984, all of which were either bodied by Metal Sections or Walter Alexander Coachbuilders ; SBS also conducted comparative trials of double-decker buses of other makes, namely
697-585: The Nissan Diesel U31S and Renault PR100 before its first bulk order for 50 Scania N113CRB buses in 1989. In the 1990s, some bus makes on the roads included the Volvo B10M , Scania N113CRB , Mercedes-Benz O405 , Leyland and Volvo Olympian and Dennis Dart . SBS also conducted trials of high capacity single decker buses, namely a superlong Volvo B10M Mark IV, an articulated Volvo B10MA and an articulated Mercedes-Benz O405G, in 1996 although
738-811: The Scania K230UB (Euro IV and V) buses were transferred to SMRT Buses from SBS Transit for some testings at Woodlands Depot before the Jurong West Bus Package begins operations in September that year. SBS Transit operates two of Singapore's six MRT lines in the network, the North East Line (NEL) since its opening on 20 June 2003 and the Downtown Line (DTL) since its opening on 22 December 2013. The NEL currently spans 19.2 km and 16 stations, running from HarbourFront in
779-500: The Ulu Pandan Depot. All single-decker Volvo B10BLE CNG buses were retired in 2019 except for the first two units which had been preserved, after that, both Volvo B10TLs and Volvo B9TL CDGEs were retired early and scrapped. Only 20 Volvo B9TL CDGE buses remained in operation until late September 2023 when they reached the end of their lifespan, with the last day of service being 22 September. In March 2024, several units of
820-448: The ancillary equipment required per set) while allowing all cars to be powered, unlike a motor-trailer combination. Each car has only one control cab, located at the outer end of the pair, saving space and expense over a cab at both ends of each car. Disadvantages include a loss of operational flexibility, as trains must be multiples of two cars, and a failure on a single car could force removing both it and its partner from service. Some of
861-549: The batteries are charged via the electric pickup when operating on electric mode. EMUs, when compared with electric locomotives , offer: Electric locomotives, when compared to EMUs, offer: SBS Transit SBS Transit Ltd ( abbreviation : SBS or SBST ) is a multi-modal public transport operator in Singapore operating bus and rail services. With a majority of its shares owned by Singaporean multinational transport conglomerate ComfortDelGro Corporation at 75%, it
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#1732775258683902-459: The bidding of the trains. In January 1998, GEC Alsthom (now known as Alstom) secured a contract to supply rolling stock for the NEL. The contract was for 25 trains, each consisting of six cars, under Contract 751A. The trains were part of the Metropolis family of the urban EMU trains. Unlike all other MRT lines, it draws power from the 1,500 V DC overhead catenary. Also, it was
943-441: The extra equipment needed to transmit electric power to the train can be difficult. Multiple unit train control was first used in the 1890s. The Liverpool Overhead Railway opened in 1893 with two-car electric multiple units, controllers in cabs at both ends directly controlling the traction current to motors on both cars. The multiple unit traction control system was developed by Frank Sprague and first applied and tested on
984-693: The first local operator to win a tender under the BCM in April 2017, and began operating the Seletar Bus Package on 18 March 2018. It was announced in 2018 by LTA that SBS Transit had won the subsequent package, the Bukit Merah Bus Package. In 2023, it was announced that SBS Transit retained the Bukit Merah Bus Package for its second term, but lost the bid for Jurong West Bus Package, which was awarded to SMRT Buses . In July 2024, it
1025-537: The first to have seats of the same color in every compartment of the train, together with the first fully driverless rolling stock in Singapore. Nevertheless, SBS Transit hires rover employees to drive trains manually if needed. For Alstom, it uses the URBALIS 300 moving-block communications-based (CBTC) Automatic Train Control (ATC) system, which optimizes headway and enables extra trains to be injected automatically into
1066-399: The front car all of the traction motors in the train are controlled in unison. The cars that form a complete EMU set can usually be separated by function into four types: power car, motor car, driving car, and trailer car. Each car can have more than one function, such as a motor-driving car or power-driving car. On third rail systems, the outer vehicles usually carry the pick up shoes with
1107-874: The more famous electric multiple units in the world are high-speed trains: the Italian Pendolino and Frecciarossa 1000 , Shinkansen in Japan, the China Railway High-speed in China, ICE 3 in Germany, and the British Rail class 395 Javelin. The retired New York–Washington Metroliner service, first operated by the Pennsylvania Railroad and later by Amtrak , also featured high-speed electric multiple-unit cars, known as
1148-624: The motor vehicles receiving the current via intra-unit connections . Many modern two-car EMU sets are set up as twin or "married pair" units. While both units in a married pair are typically driving motors, the ancillary equipment (air compressor and tanks, batteries and charging equipment, traction power and control equipment, etc.) are shared between the two cars in the set. Since neither car can operate without its "partner", such sets are permanently coupled and can only be split at maintenance facilities. Advantages of married pair units include weight and cost savings over single-unit cars (due to halving
1189-451: The name of the next station, the current station, door-closing messages, and occasionally the date and time. Also, some of the C751A trains have been installed with four rows for the standing area since 2015. In December 2018, LTA announced that the C751A trains will undergo mid-life refurbishment works from 2019 onwards. A contract worth $ 116.7 million was awarded to CRRC Nanjing Puzhen for
1230-471: The past from 1995 to 1997 and Premium Bus Services, Sentosa Services and Jurong Island Services called "SBS Leisure" in 1995 to 2003. SBS had transferred Sentosa and Jurong Island Services in 2003, and Premium Bus Services (555 and 556) in December 2003. On 1 November 2001, Singapore Bus Services was rebranded as SBS Transit to reflect it becoming a multi-modal transport operator with the impending opening of
1271-427: The refurbishment works. All 25 first-generation C751A trains will be upgraded. The trains' interior, such as seats, panels, and flooring, will be replaced. The current 6 LCD screens on the side panels (which formerly showed rail travel information of the next station and terminating station, silent commercials, and safety videos) above some seats had already been deactivated and were removed in refurbished trains. However,
Alstom Metropolis C751A - Misplaced Pages Continue
1312-523: The same year. In 1992, SBS were reorganised under a new subsidiary SBS Bus Services Pte Ltd. On 12 November 1997, Singapore Bus Services (1978) Limited was renamed DelGro Corporation, with SBS Bus Services Pte Ltd listed separately as Singapore Bus Services Limited on 10 December that year. SBS also operated taxis as SBS Taxis. SBS Taxis merged with Singapore Commuter and Singapore Airport Bus Services on 1 July 1995 to form CityCab, which remained part of DelGro Corporation. SBS also operated Airbus in
1353-467: The south-west to Punggol in the north-east. As of 2023, the NEL uses a fleet composed of three very similar series of 49 Alstom Metropolis train-sets, namely the C751A , C751C and C851E . The operating license for the NEL was awarded to SBS Transit in order to foster competition with SMRT Trains and to create multi-modal public transport companies, each specialising in their own district. In 2018, it
1394-540: The system at rush hour to increase passenger capacity and reduce congestion. In the depot, trains are also operated in fully automatic mode. Communication between the train and the fixed signaling equipment is enabled by the IAGO two-way continuous transmission system. Station-based automatic train supervision ensures a greater degree of availability. Built-in test equipment has also been included, and Eurobalise standards have been adopted for spot transmission. This rolling stock
1435-469: The trial did not succeed. The first low-floor bus , a Volgren -bodied Volvo B10TL demonstrator was brought to SBS by Volvo Buses for trial purposes in 1999. After its successful trial, 51 Volvo B10TL chassis were further brought in by SBS Transit. 50 buses are bodied by Volgren between 2002 and 2003 while 1 remaining chassis is being reserved for a ComfortDelGro Engineering bodywork, which entered revenue service by 2005. The first wheelchair-accessible bus
1476-459: The world due to their fast acceleration and pollution-free operation, and are used on most rapid-transit systems. Being quieter than diesel multiple units (DMUs) and locomotive -hauled trains, EMUs can operate later at night and more frequently without disturbing nearby residents. In addition, tunnel design for EMU trains is simpler as no provision is needed for exhausting fumes, although retrofitting existing limited-clearance tunnels to accommodate
1517-469: Was also brought into service in 2006. SBS Transit CNG buses began service in 2002. Hybrid and electric buses came into foray since 2019, although small-scale trials began in 2010. In 2020 to 2021, a unit of Mercedes-Benz Citaro C2 Hybrid, SG4004B, was brought in for trial purposes and was loaned from Daimler South East Asia under a Special Purpose License. The bus was on revenue service from 9 March 2020 to 8 March 2021 on 93 & 272 with SBS Transit under
1558-452: Was announced that SBS Transit retained the Seletar Bus Package for its second term. As of December 2019, SBS Transit operated more than 3,500 buses. SBS Transit operates a mix of single decker, double decker and articulated buses. Single deckers Double deckers Articulated buses When SBS was first formed in 1973, it inherited a wide variety of buses of various makes from its Chinese predecessors. Examples of such buses included
1599-451: Was confirmed that SBS Transit's contract for maintaining the NEL would last until 31 March 2033. The NEL was Singapore's third metro line and the city's first automated and driverless system. At times, it has been referred to as "the first driverless heavy metro line in the world" or the "world's first fully automated and driverless high-capacity rapid transit line" by some. While driverless metro systems have existed long before (notably
1640-578: Was formerly known as Singapore Bus Services before rebranding to SBS Transit on 1 November 2001. It is the largest public bus operator in Singapore, as well as one of the two major operators of Singapore's rail services along with SMRT Corporation . It has a fleet of 3,656 buses and operates 261 routes, as of 2015. Singapore Bus Services Limited was established on 1 July 1973 when the regional bus companies Amalgamated Bus Company, Associated Bus Services and United Bus Company (which were in turn results of amalgamations of privately run Chinese bus companies of
1681-422: Was the first to have seats of the same color in every compartment of the train, which is the uniform two-tones color of beige and purplish blue seats, indigo color floor and the interior body panels beige and cream color. Trains also have two side windows at each end for viewing the tracks. The exterior of the C751A trains are white and black together with red and purple stripes. C751A trains do not have