What should drivers do if a traffic signal is not functioning?

Answer: B — Treat the intersection as a four-way stop

When a traffic signal is not functioning, drivers should treat the intersection as a four-way stop. This means that all vehicles must come to a complete stop, and then proceed through the intersection in the order that they arrived, or yield to any vehicles already in the intersection. This practice is essential for maintaining safety and preventing collisions in situations where normal traffic control signals are not in place. This approach allows for clear communication among drivers, as the interaction relies on the rules of right-of-way, helping to create a predictable flow of traffic. It's important to remember that without operational signals, drivers must be vigilant and courteous to one another, as the lack of guidance can lead to confusion and potential accidents. Other actions, such as treating the intersection as a green light or proceeding without stopping, could lead to dangerous situations and are not advisable. Waiting for police instruction may not be practical in many scenarios where traffic signals fail, and could lead to unnecessary delays and confusion.