According to statistics, motorcycles, electric bicycles, and cars are the vehicles that cause the largest number of deaths in traffic accidents. About 80% of the fatal accidents of motorcycle and electric bicycle drivers and passengers are caused by craniocerebral injuries. Accidents involving casualties caused by belts being thrown out of the car abound. Relevant studies have shown that correctly wearing safety helmets and using seat belts properly can reduce the risk of death in traffic accidents by 60%-70%.