How does the seat belt design reduce injuries to the individual?

Seat belt designs reduce injuries by securing occupants in their seats during a collision, minimizing the risk of being ejected from the vehicle. They distribute crash forces across stronger parts of the body, such as the pelvis and ribcage, rather than concentrating them on vulnerable areas. Additionally, modern seat belts often include features like pretensioners and load limiters that enhance safety by tightening the belt during a crash and managing the forces applied to the body. Overall, these design elements significantly decrease the likelihood and severity of injuries in accidents.