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Catsteps is a common equipment, placed in the highway`s corner or the corner of the tunnel. Many accident happened because the car in corner cannot accurately judge the distance or the speed of the vehicle ahead. However, what wil happened if the vehicle ahead left "Steps"? This problem will be solved. When the vehicle drive through Carsteps, there will be wind caused by speed, Carsteps will perceive and lights up for 3 seconds. If the vehicle behind saw the footsteps, it will slow down and avoid the accident.
Bingzhi/Zhu Zhang/Cheng Ling`en/Wang Qichong/Wei