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

Answer: A — Treat it as a four-way stop

When encountering a traffic signal that is not functioning, treating it as a four-way stop is the appropriate response. This is based on traffic laws that require drivers to approach intersections with non-operational signals with caution, similar to how they would at an intersection with stop signs. Each driver must yield to others in accordance with the established right-of-way rules. By treating the intersection as a four-way stop, drivers must come to a complete stop and then proceed only when it is safe to do so, ensuring that everyone at the intersection has an equal opportunity to move. This helps to reduce the risk of accidents, as it creates a predictable pattern of behavior among drivers. In contrast, proceeding with caution and accelerating through does not consider the potential risks posed by other vehicles that might also be approaching the intersection. Blowing your horn and waiting for assistance contributes to confusion and can cause additional safety hazards. Ignoring the signal entirely and following regular traffic flow disregards the necessity of caution at a potentially dangerous situation where visibility and traffic conditions may not allow for safe passage.