What should be done if a traffic light is red and green at the same time?

Answer: C — Treat it as a four-way stop sign

When encountering a traffic light that is both red and green at the same time, the safest course of action is to treat the situation as a four-way stop sign. This scenario indicates a malfunction in the traffic signal system, and therefore drivers should take precautions to ensure the safety of themselves and others on the road. By treating the intersection as a four-way stop, each driver will approach the intersection safely, coming to a complete stop and assessing the traffic situation before proceeding. This practice allows for a clear understanding of who has the right of way and helps prevent potential accidents caused by confusion over conflicting signals. This approach ensures that every driver follows standard rules for uncontrolled intersections, thereby promoting safety and predictability in what could otherwise be a chaotic situation.