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An inside view of the tunnel [Photo/chinadaily.com.cn]

?Last week, a new road tunnel equipped with electrooptic energy storage self-luminescence emergency induction system was put into use in Chengkou county in SW China's Chongqing. The 550-meter-long tunnel is decorated with red, yellow, blue and white arc-shaped luminous bands which help relieve eye fatigue of drivers. The system relies on solar power and uses less than 10 kwh per day.