Wow, that video conveys exactly the difference, thanks. Seems like a USA stubbornness thing, akin to imperial vs metric system, oy vey.

Can you please elaborate with some examples if possible? I’m trying to picture this from highways and roadways here in Florida, but I am struggling to get your gist. I will look again on the way home tonight. However I am not a trucker or cdl so I might be oblivious to some.