Re: Wouldn't have happened in the UK.
"I am still surprised when I see the US still hasn't implemented this simple safety feature."
SImple. Too many humps. Even without crash bars, too many stories arise of trailers going over a hump and getting the underside stuck on it with the wheels off the ground, meaning it's stuck. Worse, many of these humps are railroad crossings, and Murphy is notorious in these scenarios. Many a trailer have been smashed by trains in these settings...if not detonated because they were carrying gas.