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When a car accident occurs on a highway at night, it is difficult to see the general road signs because of the poor vision of the rear driver.
Use drones to stand by at phone booths on highways. When an accident occurs, they immediately send out a triangular pyramid, which has strong light.
With reflection and refraction, there is an obvious light source around the history indicator, which tells the car to come from behind and an accident in front to avoid secondary injury.


Chaoyang University of Technology

Chaoyang University of Technology
Taichung City, Taiwan

Zhe-Rui, Liang,
Chaoyang University of Technology