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

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

When a traffic signal is not functioning, it is essential to maintain safety for all road users. Treating the intersection as a four-way stop is the correct approach because it establishes clear rules for how vehicles should interact at the intersection in the absence of signals. Each vehicle must come to a complete stop, allowing drivers and pedestrians to proceed safely based on their arrival order. This method helps prevent confusion and reduces the likelihood of accidents, as all drivers will be required to yield to others according to established right-of-way rules. Proceeding without stopping or following any vehicle in front can lead to hazardous situations, as other drivers may not act predictably, potentially resulting in collisions. Turning around and finding an alternate route might not always be feasible or practical, especially in busy urban areas where other routes might also be congested. Therefore, treating the intersection as a four-way stop is the safest and most efficient option when faced with a non-functioning traffic signal.