If tigger's truck had been loaded there wouldn't have been a big boom. The explosives he hauls are in crash proof containers and could be hit by a train going 50 mph without exploding. The only real danger would be if the truck had caught on fire.
Update on tigger: His right eye is open but his sight is still fuzzy. His doctor says his sight will clear up in a few days. He's slowly getting better. He has a cute blonde nurse and today he called her Alison...lol. He's still high on painkillers.