What should you do when you see a red traffic light?

Answer: B — Stop your vehicle

When you see a red traffic light, the proper and required action is to stop your vehicle. Red lights are a clear indication that you must halt before entering the intersection. This rule is essential for ensuring the safety of all road users, including other vehicles, pedestrians, and cyclists. Stopping at a red light provides time for other vehicles and pedestrians to move through the intersection safely. It is not just a recommendation but a legal requirement; failing to stop can result in traffic violations, accidents, and severe consequences for everyone involved. Understanding this rule also involves recognizing that traffic signals are designed to manage the flow of traffic and prevent collisions, so obeying a red light is fundamental in promoting road safety.