dead man's brake

dead man's brake
A brake that normally operates under pressure, but engages fully when all pressure is released.
See Also: dead mans switch

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  • dead man's handle — noun a handle for controlling the speed of an electric train or other vehicle which requires the constant pressure of the driver s hand to maintain the power supply. Also, dead man s brake …  

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  • Track brake — Track brakes are a form of brakes unique to railborne vehicles. The braking force derives from the friction resulting from the application of wood or metal braking shoes directly to the tracks (as the name suggests). Early examples of track… …   Wikipedia

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