Seat belts are safety devices found in vehicles designed to secure passengers and reduce the risk of injury during a crash. They work by distributing the force of a collision across stronger parts of the body, such as the pelvis and ribcage. Wearing a seat belt can significantly lower the chances of serious injury or death in an accident. Most modern vehicles are equipped with three-point seat belts, which include a lap belt and a shoulder strap. It is important for all passengers, including those in the back seat, to wear seat belts at all times. Many countries have laws requiring seat belt use, promoting safer driving practices.