When is it mandatory to use headlights?

Answer: B — During poor visibility conditions or after dark

Using headlights during poor visibility conditions or after dark is crucial for ensuring both your safety and the safety of others on the road. Headlights are designed to increase visibility for the driver and make the vehicle more noticeable to other road users. Poor visibility can be caused by factors such as rain, fog, snow, or heavy traffic, making it difficult to see road signs, other vehicles, and pedestrians. When it’s dark outside, headlights illuminate the road ahead, allowing drivers to react to obstacles or changes in the environment in a timely manner. Additionally, using headlights in low visibility conditions can significantly reduce the risk of accidents, as it provides clearer sightlines and enables other drivers to see your vehicle from a distance. In contrast, the other options imply that headlights may only need to be used under certain conditions or specific circumstances, which is not the best practice for road safety. Keeping headlights functional and using them as required ensures compliance with regulations and promotes safer driving for everyone on the road.