Here in Raleigh you see a lot of plates with tinted plastic covers over them. Some are so dark you can’t make out anything on the plate, even at close range. That is right up there with the dump trucks that don’t have plates at all. I don’t understand how they get away with it.
They get pulled over for rear license plate covers where I live all the time, even for clear ones.
Some heavy trucks only have a front plate..
depends on how they are registered and where. In WI apportioned plates go on the front with none on the rear.