train collision

A train wreck, train collision, train accident or train crash is a type of disaster involving one or more trains. Train wrecks often occur as a result of miscommunication, as when a moving train meets another train on the same track; or an accident, such as when train wheels come off a track in a derailment; or when a boiler explosion occurs. Train wrecks have often been widely covered in popular media and in folklore.
A head-on collision between two trains is colloquially called a "cornfield meet" in the United States.

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