rail transport Rail transport (also known as train transport) is a means of transport that transfers passengers and goods on wheeled vehicles running on rails, which are incorporated in tracks. In contrast to road transport, where the vehicles run on a p ...

, the expression power car may refer to either of two distinct types of rail vehicle: *a vehicle that propels, and commonly also controls, a

passenger train A passenger train is a train used to transport people along a railroad line. These trains may consist of unpowered passenger railroad cars (also known as coaches or carriages) hauled by one or more locomotives, or may be self-propelled; self pr ...

multiple unit A multiple-unit train or simply multiple unit (MU) is a self-propelled train composed of one or more carriages joined together, which when coupled to another multiple unit can be controlled by a single driver, with multiple-unit train contr ...

tram A tram (called a streetcar or trolley in North America) is a rail vehicle that travels on tramway tracks on public urban streets; some include segments on segregated right-of-way. The tramlines or networks operated as public transport are ...

, often as the lead vehicle; *a vehicle equipped with machinery for supplying heat or

electrical power Electric power is the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Standard prefixes apply to watts as with other SI units: thousands, millions and billions of ...

to other parts of a train. The first of these types of vehicle is closely related to the

locomotive A locomotive or engine is a rail transport vehicle that provides the Power (physics), motive power for a train. If a locomotive is capable of carrying a payload, it is usually rather referred to as a multiple unit, Motor coach (rail), motor ...

. What differentiates the locomotive and the first type of power car is their construction or use. A locomotive can be physically separated from its train and does nothing but provide propulsion and control (and heat or electricity for passenger trains). On the other hand, a power car of the first type is frequently an integral part of its train, and if the train uses

distributed traction In rail transport, distributed power (DP) is a generic term referring to the physical distribution—at intermediate points throughout the length of a train—of separate motive power groups. Such "groups" may be single units or multiple consist ...

, some of the car's interior space may be used for carrying passengers or cargo.

Examples

United States

Nearly all

high speed train High-speed rail (HSR) is a type of rail system that runs significantly faster than traditional rail, using an integrated system of specialised rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines ...

s use power cars, frequently at both ends. An example of these are the

Acela Express The ''Acela'' ( ; originally the ''Acela Express'' until September 2019) is Amtrak's flagship service along the Northeast Corridor (NEC) in the Northeastern United States between Washington, D.C. and Boston via 13 intermediate stops, includ ...

trainsets in use by

Amtrak The National Railroad Passenger Corporation, Trade name, doing business as Amtrak () , is the national Passenger train, passenger railroad company of the United States. It operates inter-city rail service in 46 of the 48 contiguous United Stat ...

, which are built by Bombardier in Canada using technology licensed from France's Alstom. The twenty Acela trainsets operate between

Washington, D.C. ) , image_skyline = , image_caption = Clockwise from top left: the Washington Monument and Lincoln Memorial on the National Mall, United States Capitol, Logan Circle, Jefferson Memorial, White House, Adams Morgan, ...

and

Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...

Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...

. Each trainset consists of six passenger cars and two power cars.

United Kingdom

Another traditional example would be the older

InterCity 125 The InterCity 125 (originally Inter-City 125New trai ...

, made for and used by

British Rail British Railways (BR), which from 1965 traded as British Rail, was a state-owned company that operated most of the overground rail transport in Great Britain from 1948 to 1997. It was formed from the nationalisation of the Big Four British rai ...

and several subsequent privatised bodies like

Great Western Railway The Great Western Railway (GWR) was a British railway company that linked London with the southwest, west and West Midlands of England and most of Wales. It was founded in 1833, received its enabling Act of Parliament on 31 August 1835 and ran ...

New Zealand

Multiple unit A multiple-unit train or simply multiple unit (MU) is a self-propelled train composed of one or more carriages joined together, which when coupled to another multiple unit can be controlled by a single driver, with multiple-unit train contr ...

s (

diesel Diesel may refer to: * Diesel engine, an internal combustion engine where ignition is caused by compression * Diesel fuel, a liquid fuel used in diesel engines * Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...

electric Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by ...

) usually have a mix of power cars and trailers, often with one of each in a pair which can be coupled to other pairs to form a larger train; see e.g.

New Zealand FP class electric multiple unit The New Zealand FP/FT "Matangi" class () is a class of electric multiple units used on the suburban rail network of New Zealand's capital city, Wellington. The class, consisting of an FP power car and an FT trailer car, operates services on all ...

Australia

The

NSW TrainLink NSW TrainLink is a train and coach operator in Australia, providing services throughout New South Wales and the Australian Capital Territory, along with limited interstate services into Victoria, Queensland and South Australia. Its primary interc ...

XPT, which is based on the InterCity 125, has a power car at each end, one pulling and the other pushing. The

Queensland Rail Queensland Rail (QR) is a railway operator in Queensland, Australia. Owned by the Queensland Government, it operates local and long-distance passenger services, as well as owning and maintaining approximately 6,600 kilometres of track and relate ...

Diesel Tilt Train The Diesel Tilt Train is the name for three high-speed tilting train services, operated by Queensland Rail on the North Coast line from Brisbane to Cairns as part of its Spirit of Queensland service. History In August 1999, a contract was awar ...

also has two power cars. Electric Multiple Units, such as the

Sydney Trains Sydney Trains is the operator of the suburban passenger rail network serving the city of Sydney, New South Wales, Australia. The network is a hybrid urban- suburban rail system with a central underground core that covers over of track and 170 ...

C set, have power cars on each end with trailer cars in the middle.

References

{{DEFAULTSORT:Power Car Rolling stock