The biggest problem with failsafes of that nature is that they get disabled, either because the users find them annoying day-to-day or because something in the

The biggest problem with failsafes of that nature is that they get disabled, either because the users find them annoying day-to-day or because something in the system failed in the field and getting the equipment back in service was prioritized over maintaining all safety checks. Most dump trucks have alarms that will go off if the bed is raised while moving and some modern ones can even limit speed while the bed is raised (there are plenty of legitimate uses for driving slowly with the bed up), yet it seems like we don't go a month without someone slamming one in to a bridge.