I would question the claim that Americans are bad drivers in general. Compared to driving I've seen in other countries (particularly India, China), even the worst drivers I've seen in America aren't so bad. And the worst drivers in America I know personally are not actually Americans but internationals.
Maybe we are generally worse compared to other western countries but my experience suggests the prevalence of driving in America puts our skills among the best. If someone has data which suggests otherwise please share.
Maybe we are generally worse compared to other western countries but my experience suggests the prevalence of driving in America puts our skills among the best. If someone has data which suggests otherwise please share.