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Derailment
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A derailment is an accident on a railway whereby a train leaves the rails, which usually results in damage, injury, and often death.

There are several main causes of derailment: broken or misalligned rails, excessive speed, and faults in the train and its wheels. Derailment can also occur as a secondary effect in the aftermath of a collision between two or more trains. Catch Point s protect main lines from runaway vehicles by deliberately derailing them to bring them to a stop.
Flangeless Wheels make it easier for a locomotive to negotiate curves, but make them more prone to derailment.


RERAILING


Rerailing a train after it has derailed is not an easy task, and often requires the use of large rail mounted cranes.


EXAMPLE ACCIDENTS


''Most railway accidents involve derailment. See List Of Rail Accidents .''

  • , who continues on to the Nation's Capital the next day.


  • noon express, traveling from Boston to Lawrence, Massachusetts, derails at forty miles an hour when an axle breaks at Andover, and the only coach goes down an embankment and breaks in two. Only one is killed, the twelve-year-old son of President-elect Franklin Pierce , but it is initially reported that General Pierce is also a fatality. He was on board but is only badly bruised. The baggage car and the locomotive remain on the track.


  • passenger cars tumble down a hundred foot ravine above the Cheat River in West Virginia, west of Cumberland, Maryland, after they are derailed by a loose rail.



2003

  • which remained depressed because of the drivers weight, and the guard who could have applied the emergency brake, but was in a Microsleep at the time - were found to be the direct causes of the incident.



SEE ALSO