Safety belt is a tool that keeps a person in their seat in the event of a collision. The person's waist is secured by the seatbelt, which is fastened to the seat. The benefit of wearing this belt is that it prevents the wearer from being flung out of the vehicle's seat in the event of an accident. All road safety experts agree that buckled front-seat passengers have a 45% lower chance of fatal injuries. The best car safety feature to keep you from being killed or suffering serious injuries in an accident is a safety belt.