Shanghai subway begins in 1995 and it is the third city which have subway system in China. It is also the longest subway in China. To the subway safe, Shanghai install the LED strip lamp to replace for yellow alarm line. Red, yellow and green can change in turns. The striking color can alarm people do not walk over the safe line. In the fact, the LED strip lamp play an important role in subway. What's more, it is energy saving and environmental protection.
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