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Multiple control technology is also used in [[push-pull train]]s operating with a standard locomotive at one end only. Control signals are either received from the cab as normal, or from a [[Control car|cab car]] at the other end that is connected to the locomotive by cables through the intermediate cars.
In the United States, [[Amtrak]] often operates one to three diesel locomotives on routes outside the [[Northeast corridor]] with only one operator.
==In trolleybuses==
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