Multiple unit

Common card · No. 388536

A multiple-unit train (or multiple unit (MU)) is a self-propelled train or trainset composed of one or more carriages joined, and where one or more of the carriages have the means of propulsion built in. By contrast, a locomotive-hauled train has entirely unpowered carriages. An implication of this is that all powered carriages must be controllable by a single engineer or driver, which falls under the broader concept of multiple-unit train control. In other words, all "multiple units" employ some variation of multiple-unit train control. In the broader context, "unit" means any powered rail vehicle, including locomotives (that do not carry cargo) and powered cargo-carrying carriages. In the context of this article, "unit" refers specifically to the latter only (whether the cargo is passengers or some other cargo). What follows is that if coupled to another multiple unit, all MUs can still be controlled by the single driver, with multiple-unit train control. Although multiple units consist...

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