Qingdao uses new LED signs to cope with haze
Updated: 2013-04-19
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| Technicians install LED signs powered by solar energy in Qingdao on April 16. [Photo/Xinhua] |
With haze becoming a frequent occurrence, Qingdao' municipal traffic police department has begun using LED signs to regulate traffic during bad weather. Powered by solar energy, the signs flicker while in operation and can be controlled through a smart traffic system and text messages by police officers.
