Multiple-unit train control

This article is about the train control technology. For multiple unit vehicles, see Multiple unit.
Two ICE 2 trains operating in multiple-unit train control in Bielefeld, Germany

Multiple-unit train control, sometimes abbreviated to multiple-unit or MU, is a method of simultaneously controlling all the traction equipment in a train from a single location—whether it is a multiple unit comprising a number of self-powered passenger cars or a set of locomotives—with only a control signal transmitted to each unit. This contrasts with arrangements where electric motors in different units are connected directly to the power supply switched by a single control mechanism, thus requiring the full traction power to be transmitted through the train.

A set of vehicles under multiple unit control is referred to as a consist in the United States.[1]

  1. ^ "Glossary | The Railway Technical Website". US term for train formation e.g. 'This vehicle was in the consist'. Now heard in the UK amongst trendy railway people.