Picture this: The driver of a semi-trailer truck, which was hauling a second trailer, stopped at a grade crossing when the lights began flashing and the gates came down. He waited while a northbound Union Pacific freight trundled past. When the last freight car cleared the crossing, the gates went up and traffic began to move.
But an Amtrak train, one of the Cascades, was approaching from the opposite direction and, as the truck was moving across the double tracks, the lights began flashing again and gate came down ... between the two trailers!
At this point the truck driver, Richard Right, accelerated, knowing he had to break off the gate arm in order to get completely across the tracks.
He almost made it. Almost.
The train hit the second trailer, tearing it away from the main rig and turning it into a pile of junk. Fortunately, there were no injuries.
It sounds like Right did nothing wrong, and this one can be chalked off as a case of very bad split-second timing. It does reinforce the fact, however, that circumstances can and do conspire to make any grade crossing dangerous.