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It occurs occasionally that the door of a stopping car is opened suddenly when we are passing by it, which is dangerous. The handled on the car door is modified in this product, to give some alarming signal as it is opening. When the person in the car pulls the handle inside the car to open the door, the red light on the handle outside the door begins to flash, so as to alarm the walker. And then the door is open normally. This can release the danger caused by the traditional one.
Dalian Minzu University
Dalian, China
Haimo Bao , Jiwei Zhang , Mingcang He , Jiaqi Wang