Turfman, you're out in left field on this one. The problem comes from having a strange condition of the truck and trailer parked on the convex curve of a slope transitioning to a flat. It's plenty easy to miss when you get ready to load, been there, done that. Overloading has nothing to do with it, all your pontificating aside. It's a matter of the operator missing the signals and finding out too late that he's in trouble.