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When riding your bike or walking on the road, you will never know when the car in front of you will open the door, which often causes a lot of accidental injuries. This warning light is designed to solve this problem. When you reach out your hand to the door handles there will be a fan-shaped area of the red warninglights around the chassis, which can warns people to avoid the dangerous area . As a result, there will be less accidents.
Hebei University of Engineering
Feng,Dong Guo,Yixuan Hou,Wanyi