What is the purpose of using a seatbelt?

The primary purpose of using a seatbelt is to minimize the risk of injury in a crash. When a vehicle is involved in a collision, the forces at play can cause occupants to be thrown forward at high speeds if they are not restrained. Seatbelts work by keeping the occupants securely in their seats and distributing the forces of a crash across sturdier parts of the body, such as the chest and pelvis. This significantly reduces the likelihood of severe injuries and fatalities.

While keeping passengers secure in their seats is also a function of seatbelts, their main design and functionality revolve around protecting occupants during accidents. Enhancements in vehicle safety regulations and technology continue to emphasize the critical role that seatbelts play in reducing injury risk during crashes. The comfort of the vehicle and preventing driver fatigue are not primary functions of seatbelts, and are considered secondary or unrelated factors.