With the rapid development of China's economy and the increase in infrastructure investment, there has been a breakthrough in the mileage of highways in China. According to statistics, the mileage of highways in China had reached 25200 km by the end of 2002, second only to the United States and ranking second in the world; But the safety issues of highways are becoming increasingly prominent. Due to the characteristics of highways, such as high speed, the severity of accidents is relatively high, resulting in a large number of casualties and property losses; According to statistics, there were 773000 traffic accidents and 109000 deaths in China in 2002, with a traffic accident fatality rate of about 1/4, which is 28.2 times that of Japan and 10 times that of South Korea! In order to reduce the severity of accidents, various highway management departments have strengthened highway management, increased road monitoring efforts, improved traffic safety facilities, and installed some anti-collision mat systems in dangerous and accident prone areas.
Crash pads are facilities that absorb collision energy to safely stop a vehicle and change the direction of travel to avoid serious injuries to passengers. Their main function is to reduce the severity of accidents, and on the other hand, they also serve as warnings and inducements through their surface colors and graphic symbols.
