The way it works around here is if you can get into a space before someone else you win, that's your space now and everyone else has to deal with it. Doesn't matter if it's in an oncoming traffic lane or whatever. The only thing holding you back is your own risk tolerance.

Same thing even if you're not in a car. If you're a pedestrian you have to get into the space of a crosswalk before the car does to win, they won't wait for you.