come to think of it, there are significant company cultural differences too, so different companies have different norms, but I didn’t mean those, and they would only come up between coworkers if someone switched companies and was still used to the other one’s norms
I used to work in Cambridge, MA and drove from Stow, MA, which at the time was the first town beyond the suburbs - so rural. The commute was interesting, because it started where everyone was driving ultra-ultra-polite, then gradually changed to very aggressive driving. Your style definitely had to change greatly along the way to avoid problems.