A Friendly Reminder

4-Way Stop Intersections

In the United States and Canada, there are many 4-way intersections with a stop sign at every entrance. In this case, the default rule is:

1. Whichever vehicle stops first has priority.
2. If two vehicles stop at the same time, priority is given to the vehicle on the right.
3. If three vehicles stop at the same time, priority is given to the two vehicles going in opposite directions.
4. If four vehicles stop, drivers usually use gestures and other communication to establish right-of-way. In some areas, the custom is for the north-south or the more-trafficked road to have priority, although this is rare.

Got my info here.