Final answer:
When three vehicles reach a 4-way stop at the same time, all vehicles have equal right of way.
Step-by-step explanation:
When three vehicles reach a 4-way stop at the same time, the right of way belongs to All vehicles have equal right of way. In this scenario, all vehicles should come to a complete stop and then proceed one at a time, allowing each vehicle a turn to go through the intersection.
If all vehicles arrive at the stop sign simultaneously, they should yield to each other and proceed in the order they arrived, following the standard right-of-way rules. For example, if Vehicle A arrives first, followed by Vehicle B and then Vehicle C, the order of right of way would be Vehicle A, followed by Vehicle B, and then Vehicle C.