What action should you take if you approach an intersection with a traffic control signal that is not working?

Answer: B — Come to a complete stop and treat it as a four-way stop

When approaching an intersection with a traffic control signal that is not functioning, the appropriate action is to come to a complete stop and treat the intersection as a four-way stop. This measure ensures safety for all drivers and pedestrians since the absence of a functioning traffic signal removes the standard right-of-way rules. By treating it as a four-way stop, every vehicle must yield to the vehicle that arrives first or to the right if two vehicles arrive simultaneously, thereby minimizing the risk of accidents. This approach helps maintain order and safety at intersections where confusion may otherwise occur.