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{{Refimprove|date=April 2009}}
'''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 car|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
A set of vehicles under multiple unit control is referred to as a [[consist]] in the United States.<ref>[http://www.railway-technical.com/newglos.shtml#C Railway Technical Web Pages:Modern Railway Terminology] {{webarchive|url=https://web.archive.org/web/20141007220720/http://www.railway-technical.com/newglos.shtml |date=2014-10-07 }} ''railway-technical.com''</ref><!-- a better reference is needed-->
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