How should a driver react when approaching a traffic signal that is not functioning?

When a driver approaches a traffic signal that is not functioning, the correct response is to treat the intersection as a four-way stop. This means that vehicles should come to a complete stop and yield the right-of-way according to the rules of a four-way stop. Each driver must assess other vehicles at the intersection, and they must proceed in the order of arrival or yield to vehicles already in the intersection.

This approach enhances safety, as it allows all drivers to be aware of each other, minimizing the risk of accidents that could occur from treating the situation as if the signal were functioning. Not adhering to this method could lead to confusion and chaos at the intersection, as drivers may not be clear on who has the right to proceed first.

The other choices suggest actions that could lead to unsafe driving conditions. Ignoring the signal and proceeding or treating it as a green light does not consider the need for caution when traffic controls are down. Additionally, waiting for another vehicle to go first could lead to unnecessary delays and may not be the safest option since it does not provide a clear protocol for how the intersection should be navigated.