This debate has been on the forums for years. Heck even in here, we cant agree on this issue.
Trainz is a Train DRIVING simulation. Not a Trainz crashing simulation.
Explosions, violence and destruction etc, would ruin this great game.
Not to mention change the family G-rating.
Say NO to collision detection.
Alan
Collision detection has more purposes than just crashing. As discussed in this thread: http://forums.auran.com/trainz/showthread.php?t=3278 bounding boxes could prevent particle effects from moving through solid objects. It's just not realistic for a steam loco's smoke to go straight through the deck of an overpass.
And simple bounding boxes wouldn't have much in the way of explosions, violence and destruction etc, just cars piling up on each other.