Train stop
Railway safety device / From Wikipedia, the free encyclopedia
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This article is about the train protection device. For the place where trains stop, see Train station.
Part of a railway signalling system, a train stop, trip stop or tripcock (sometimes called a tripper) is a train protection device that automatically stops a train if it attempts to pass a signal when the signal aspect and operating rules prohibit such movement, or (in some applications) if it attempts to pass at an excessive speed.
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