What should you do if you approach a traffic signal that is not functioning?

When approaching a traffic signal that is not functioning, treating it as a four-way stop is the proper course of action. This means that all vehicles must come to a complete stop before proceeding through the intersection. The reason for this protocol is to ensure safety and to maintain an orderly flow of traffic, especially since the absence of a functioning traffic signal creates ambiguity about the right-of-way.

By treating the intersection as a four-way stop, drivers can make cautious decisions based on the presence of other vehicles and pedestrians. It's important to yield to drivers who arrived at the intersection first and to be mindful of any pedestrians crossing. This approach helps to prevent collisions and ensures that all road users can navigate the intersection safely, even when signaling devices are not operational.

Other options may lead to unsafe driving behavior or confusion among drivers. For instance, accelerating through the intersection poses a significant risk as it disregards the need for caution at a potentially hazardous situation. Ignoring the signal when no other cars are around could result in accidents if another driver approaches unexpectedly. Turning around might not be practical or safe, especially if there’s no clear alternate route. Thus, the correct action of treating the malfunctioning signal as a four-way stop promotes safety for everyone involved on the road.