DOT Researchers Suggested a Way to Make Big Trucks Safer. After Meeting With Lobbyists, Agency Officials Rejected the Idea.

Do you have a link? Interested in seeing what the device was

Why make it more difficult to get around when you could just let people learn not to go under enormous mountains of steel? Honestly there are reasons why adding more stuff to trailers will make things more difficult. There's lots of places I've delivered to where I'd have gotten stuck, and all that stuff adds more weight which means less efficient transport and more emissions.