I can't recall a place where the priority is not made explicit in some way. If I ever found one of such places, I think I'd stop and watch if someone's coming.
On occasion of a trip to the USA, I realized that there were lots of crossings in suburban areas with no priority indication. The rule was: you stop, see who is stopped, and you go when these are gone. That is, motorists arriving to a junction after you will wait until you are gone, no matter where they come from. I didn't like this rule.
Josep
