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When we drive on the road or highway, we often need to brake. However, sometimes we dont know the front cars extent of brake. It may cause rear-end accident. The Brake's Volume Light has many sections, different degrees of braking corresponds different number of lights, just like the energy bar. It makes the rear cars know the degree of the braking.
Zhejiang Sci-Tech University
Hangzhou, China
Zhejiang Sci-Tech University
Hangzhou, China
Tuo Jin, Weijie Kong, Zhang Cheng, Zhenli Mao