A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages. Diesel-powered single-unit railcars are also generally classed as DMUs. Diesel-powered units may be further classified by their transmission type: diesel–mechanical DMMU, diesel–hydraulic DHMU, or diesel–electric DEMU.
A railcar is a self-propelled railway vehicle designed to transport passengers. The term "railcar" is usually used in reference to a train consisting of a single coach, with a driver's cab at one or both ends. Some railway companies, such as the Great Western, termed such vehicles "railmotors".
The British Rail Class 319 is an electric multiple unit passenger train built by British Rail Engineering Limited's Holgate Road carriage works for use on north–south cross-London services. These dual-voltage trains are capable of operating on 25 kV 50 Hz from AC overhead wires or 750 V DC from a third rail.
The Butetown branch line, also known as the Cardiff Bay Line, is a 1-mile-6-chain (1.7 km) commuter railway line in Cardiff, Wales from Cardiff Bay to Cardiff Queen Street. The service pattern used to comprise a mixture of shuttle services along the branch and through trains along the Rhymney Line to Caerphilly, or the Coryton Line to Coryton, but since December 2005 is a shuttle service from Queen Street station. The normal journey time is four minutes.
Stadler Rail is a Swiss manufacturer of railway rolling stock, with an emphasis on regional train multiple units and trams. It is also focused on niche products, such as being one of the last European manufacturers of rack railway rolling stock. Stadler Rail is headquartered in Bussnang, Switzerland.
Stadler FLIRT is a passenger multiple unit trainset made by Stadler Rail of Switzerland. The baseline design of FLIRT is an electric multiple unit articulated trainset that can come in units of two to twelve cars with two to six motorized axles. The maximum speed is 200 km/h (125 mph). Standard floor height is 57 cm, but 78 cm high floors are also available for platform heights of 76 cm.
Diesel multiple units and railcars are trains, usually with passenger accommodation, that do not require a locomotive. Railcars can be single cars, while in multiple units cars are marshalled together with a driving position either end. As of December 2010, 23 percent of the rail passenger cars used on Network Rail are part of a diesel multiple unit.
The South Wales Metro is an integrated heavy rail, light rail and bus-based public transport services and systems network currently being developed in South East Wales around the hub of Cardiff Central. The first phase was approved for development in October 2013. Works are currently under way, with a new depot under construction at Taff's Well and new trains being built by Stadler Rail in Switzerland. The development will also include the electrification of the core Valley Lines and new stations.
The British Rail Class 230 D-Train is a diesel electric multiple unit or battery EMU built by rolling stock manufacturer Vivarail for the British rail network. The units are converted from old London Underground D78 Stock, originally manufactured in 1980 by Metro-Cammell, and have been assigned the designation of Class 230 under TOPS.
The CAF Civity is a platform of regional passenger trains which is manufactured by Spanish rolling stock manufacturer Construcciones y Auxiliar de Ferrocarriles. Available as both diesel, electric and battery-electric multiple unit, the Civity was first launched in 2010 and received its first order two years later.
The Stadler Citylink is a series of tram-trains manufactured by Stadler Rail at its Valencia factory since 2011. The design was introduced by Vossloh España before their takeover by Stadler Rail in 2015. They are currently used in Germany, Hungary, Mexico, Spain and the United Kingdom, with more on order in Austria.
An electro-diesel multiple unit (EDMU) or bi-mode multiple unit (BMU) is a form of a multiple unit train that can be powered either by electric power picked up from the overhead lines or third rail or by using an onboard diesel engine, driving an electric generator, which produces AC or DC electric power.
The British Rail Class 755 FLIRT is a class of bi-mode multiple unit passenger train built by Stadler Rail for Greater Anglia. Part of the FLIRT modular train family, the trains first entered service on 29 July 2019 and are used on regional and local services throughout East Anglia. They may also be used on the Norwich to London intercity services.
The British Rail Class 745 FLIRT is a class of electric multiple unit passenger train, built by Stadler as part of the FLIRT family. The class is built for Greater Anglia for use on their inter-city services and the Stansted Express services. They first entered service on 8 January 2020, after being constructed between 2018 and 2020 in Switzerland.
Keolis Amey Operations, trading as Transport for Wales Rail Services was a Welsh train operating company owned by Keolis (60%) and Amey (40%) that operated the Wales & Borders franchise between October 2018 and February 2021.
The British Rail Class 93 is a tri-mode locomotive being built by Stadler Rail in Valencia. It will be an evolution of the Class 88 bi-mode locomotive which was built by Stadler for Direct Rail Services. Three different power sources will be used to power the locomotive – 4,000 kW (5,400 hp) 25 kV AC overhead electric power, or a 900 kW (1,200 hp) diesel engine supplemented by a 400 kW (540 hp) battery – allowing the locomotive to be used on both electrified and non-electrified lines.
The British Rail Class 197 is a class of diesel multiple unit passenger train built by CAF, based on its Civity platform. They are currently operated by Transport for Wales (TfW), split into 51 two-car units and 26 three-car units.
The British Rail Class 231 is a class of eleven diesel-electric multiple units of the FLIRT family, which have been built for Transport for Wales by Swiss rolling stock manufacturer Stadler Rail. The first units entered service on 18 January 2023.
The Class 398 Citylink is a fleet of 36 tram-train multiple units being built for Transport for Wales Rail by Swiss rolling stock manufacturer Stadler Rail.
Transport for Wales Rail Limited, branded as Transport for Wales and TfW Rail, is a Welsh publicly owned train operating company, a subsidiary of Transport for Wales (TfW), a Welsh Government-owned company. It commenced operations of the day to day services of the Wales & Borders franchise on 7 February 2021, as an operator of last resort, succeeding KeolisAmey Wales.
