Not only that, but the driver of a train will often see an impending collision, but will have no way to prevent it -- it takes a freight train over a mile to st

Not only that, but the driver of a train will often see an impending collision, but will have no way to prevent it -- it takes a freight train over a mile to stop. The combination of being in control of the train, but unable to stop an accident, is a recipe for trauma.