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The CAUTION WALL is a laser indicator which can warn drivers of road edge in fog. It is likely that drivers fall down the edge in the mountains when driving in dense fog with low visibility. The catseye is an existing solution by reflecting head lights to show the road. Unfortunately, when light is blocked from fog, the catseye cant work perfectly. The CAUTION WALL is a device that emits laser which is a coherent and low-powered beam of visible light becoming a clear red line in fog. It is a device installed on the road side warning drivers of road edge and avoid tragedies occur.
National Cheng Kung University
Chao-Cheng, Chou Pin-Xin, Ye Shih-Tyng, Hsieh Jyuhn, Cheng