You need to have some basic understanding of English in order to be a safe driver in the US. Traffic signs, warnings, everything is in English.
I just had an incident the other day entering a one lane bridge that had an alternate merge sign clearly displayed at the entrance. Two woman in the car just about crashed into me if I didn’t slam on my brakes. I blew my horn and they look at me like I’m crazy! It was obvious to me that they didn’t understand English because the sign is there for all to see. You are absolutely right that their refusal to learn even the most basic levels of English cause them to be a dangerous hazard on the road.
How can one live in a society, watch TV, see billboards and newspapers and not learn the language by osmosis? A week in Puerto Vallarta 30 years ago and we could communicate pretty well in their lingo.
“Traffic signs, warnings, everything is in English.”
Yeah. Too bad none of them say, “Mexicans - please do not get snot faced drunk and kill US citizens on their own highways.”