Intersections and turns1 of 3
Two vehicles reach a four-way stop at about the same moment. Which one yields?
The answer
Answer: D. At stop-sign intersections the first vehicle to arrive goes first, the second goes second, and so on. When two arrive at about the same time, yield to the one on your right. A driver turning left must also yield to vehicles going straight or turning right.
Source: Washington Driver Guide — 4.13 Common intersections (four-way stop)