A train derailment happens when a train comes off its rails. Train tracks are designed to have two steel rails at a fixed distance apart. These rails are responsible for keeping the train wheels moving along the course of the tracks. When a train comes off its rails, the implications can be dangerous, especially if there are passengers or heavy cargo onboard. In the most devastating train derailments, passengers and occupants can be seriously injured if the train’s momentum causes it to come off the tracks and topple over on its side or crash into other compartments.