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When a accident happened, the warning triangle must be placed to warning the other cars.
To avoid the crashes accidents, while the triangle warning must be put behind the 100 meters
from accident Location.The driver must walk to the rear to place the warning triangle.It’s
not only waste of time may also be crashed by other cars. It’s a high-risk action that walk to
place the warning triangle.This is an urgent need to be resolved problem .

Inflatable warning using vibration to produce electricity, usually installed on the rear chassis.
When accident happened, it can quickly throw the ballooned triangle warning to the rear ,
no longer walk to place warning triangle, save settings triangle warning time and reducing
risks, To allow motorists more security guarantees.



Taipei, Taiwan

Wen-Chih Chang


National Taiwan University of

National Taiwan University of
Taoyuan, Taiwan

Wei-Ting Chen Jia-Wen Chen Huei-Rou Tsai