A derailment of a train can be caused by a collision with another object, an operational error (such as excessive speed through a curve), the mechanical failure of tracks (such as broken rails), or the mechanical failure of the wheels, among other causes.

How common are train derailments?

About every hour and a half a train collides with another object or is derailed. Every two weeks a train that is carrying hazardous materials derails in the United States.

What is the most common cause of train derailments?

Broken Rails and Welding Are the Most Common Cause of Train Accidents. According to the Federal Railroad Administration (FRA), broken rails and welding are the most common cause of train accidents in the U.S. Broken rails and welding are the cause of over 15 percent of all train derailments.