A locomotive or engine is a rail transport vehicle that provides the 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, railcar or power car; the use of these self-propelled vehicles is increasingly common for passenger trains, but rare for freight trains.
Pacific National diesel locomotives in Australia showing three body types, cab unit (front), hood unit (middle) and box cab (rear)
A Victorian Railways R class steam locomotive in Australia
A China Railways HXD1D electric locomotive in China
Wainwright SECR Class P on the Bluebell Railway, England
Rail transport is a means of transport using wheeled vehicles running in tracks, which usually consist of two parallel steel rails. Rail transport is one of the two primary means of land transport, next to road transport. It is used for about 8% of passenger and freight transport globally, thanks to its energy efficiency and potentially high speed.
A train in Alaska transporting crude oil in March 2006
A 16th-century minecart, an early example of unpowered rail transport
A replica of a "Little Eaton Tramway" wagon; the tracks are plateways.
A replica of Trevithick's engine at the National Waterfront Museum in Swansea, Wales