As a regular visitor to the US I follow the posted limits precisely. I have no intention of testing the varying law enforcement tolerances or discovering the po

As a regular visitor to the US I follow the posted limits precisely. I have no intention of testing the varying law enforcement tolerances or discovering the possible complications for my immigration welcome the unpleasant way. As for the people leaning on the horn behind me, I've no sympathy at all: as far as I'm concerned, they're your rules, I'm just respecting them. As I do in every other country.