If two vehicles arrive at an intersection with an all-way stop sign at the same time, which vehicle can go first?

At an intersection with an all-way stop sign, the general rule for determining which vehicle has the right of way when two vehicles arrive simultaneously is based on their relative positions. The vehicle on the right has the priority to go first. This means that when both vehicles arrive at the same moment, the one that is situated on the right side of the other vehicle has the right of way.

Understanding this rule helps maintain order and safety at intersections where multiple vehicles are present. The concept behind this rule is to minimize confusion and potential accidents by establishing clear priorities. In practice, this avoids situations where drivers might hesitate or guess who should go first, which can lead to dangerous encounters.

The other options do not apply in this scenario — the vehicle on the left does not have priority, the size of the vehicle does not affect right of way in this instance, and while it's important to remain cautious, one of the vehicles is indeed able to proceed if determined by the right of way rules.