Runaway Train
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A runaway train is a type of railroad incident in which unattended rolling stock is accidentally allowed to roll onto the main line, a moving train loses enough braking power to be unable to stop in safety, or a train operates at unsafe speeds due to loss of operator control. If the uncontrolled rolling stock derails or hits another train, it will result in a train wreck.
A deadman's control, if the brakes are working, can prevent unattended rolling stock from moving.
A railway air brake can fail if valves on the pipe between each wagon are accidentally closed; the 1953 Pennsylvania Railroad train wreck and the 1988 Gare de Lyon train accident were results of a valve accidentally closed by the crew, reducing braking power.
A parked train or cut off cars may also run away if not properly tied down with a sufficient number of hand brakes.
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Young Lean - 2009-03-17 00:00:00
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