A railway official says the derailment that killed 275 people and injured hundreds more was caused by an error in the electronic signaling system that led a train to wrongly change tracks and crash into a freight train. (June 4)
A railway official says the derailment that killed 275 people and injured hundreds more was caused by an error in the electronic signaling system that led a train to wrongly change tracks and crash into a freight train. (June 4)