In 2006 train-to-train collisions should be impossible. With GPS tracking it is possible to identify potential collisions and automatically stop them from happening. Do the train companies do this? I can’t imagine that they don’t, but why do we still hear about trains colliding head on every once in a while — especially in third world countries.
I’m sure your average computer engineer could figure this one out: Attach a GPS locator to every train and build a communication system that puts the breaks on trains when they’re headed for a collision with each other.
How hard can it be?