What is a mandatory safety requirement for drivers?

Wearing seat belts is a mandatory safety requirement for drivers because it is a critical component of vehicle safety designed to protect occupants in the event of a collision or sudden stop. Seat belts significantly reduce the risk of injury and death by keeping passengers secured within their seats, preventing them from being thrown from the vehicle or colliding with other occupants or hard surfaces inside the car.

Safety regulations often mandate the use of seat belts not only to protect drivers and passengers but also to promote responsible driving behavior. Wearing a seat belt is a simple yet effective measure that enhances overall safety on the road. It is a key part of both personal protection and public safety considerations, which is why it is enforced by law in numerous jurisdictions.

The other options listed do not constitute mandatory safety requirements. While cruise control can be used for convenience, it does not contribute to safety in the same way that seat belts do. Sunglasses and radar detectors can be beneficial in certain driving conditions, but they are not universally required or focused on the protection of occupants within the vehicle.