A lap belt is a type of safety restraint commonly found in vehicles. It is designed to secure the occupant's lower body by fitting across the lap, helping to prevent injury during sudden stops or collisions. Lap belts are typically part of a larger seatbelt system, which may also include shoulder belts for added protection. In addition to vehicles, lap belts are also used in various other settings, such as in airplanes and amusement park rides. They are essential for ensuring safety by keeping individuals securely in place, reducing the risk of being thrown from the seat during unexpected movements.