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Many cars drive too fast in the night. Therefore, drivers do not watch pedestrians on crosswalk, so many accidents happen. To solve this, laser curtain-shaped traffic lights are suggested.
Cheong-ju university
cheong-ju, South Korea
Cheong-ju university
cheong-ju, South Korea
Seong pil / Hong
Cheong-ju university
cheong-ju, South Korea
Young won / Kim
Cheong-ju university
cheong-ju, South Korea
Tea young / Yoon
