Seat belts, also referred to as safety belts or harnesses, are essential in any vehicle to ensure passenger safety. They prevent passengers from being thrown forward in the event of an accident or sudden stop, which can cause serious injury or even death. Other synonyms for seat belt include restraint system, lap and shoulder belt, and occupant restraint. In addition, some vehicles feature automatic safety belts, which are motorized belts that retract when the door is closed and lock in place when the engine is started. No matter the terminology used, seat belts remain an indispensable element in vehicle safety for drivers and passengers alike.