Which component of a vehicle is primarily designed to protect occupants during a collision?

The seatbelt is primarily designed to protect occupants during a collision by securing them in their seats, reducing the risk of injury. When a vehicle experiences a sudden stop due to an accident, seatbelts work by restraining the body, preventing it from continuing forward momentum which could lead to serious injury or ejection from the vehicle. They are a fundamental safety feature in all vehicles and are required by law in many places, highlighting their importance in occupant safety.

While child safety seats also provide crucial protection for younger passengers, their function is particularly specific to children and does not apply to all occupants. Side airbags are another critical safety feature that deploys upon impact to provide additional cushioning; however, they work in conjunction with seatbelts rather than serving as the primary restraint. Anti-lock brakes, while important for maintaining steering control during braking, do not directly contribute to occupant protection in a collision. Understanding the role of each component helps clarify why the seatbelt stands out as the primary protective measure.