In recent years, with the rapid economic development, road congestion has become increasingly serious. Major cities have successively constructed underground transport subways to ease traffic congestion. Guangzhou Asian Games, Shenzhen Universiade shine LED green lighting, quietly walked into the subway car. LED lamps and lanterns, of course, has become a bright line to the OFweek semiconductor lighting network, Jiuzhou Optoelectronics, the history of Ford Lighting, Sony source of light and other LED companies compete to seize the subway lighting market.
LED lighting technology and the rapid development of China's energy-saving emission reduction policies in-depth implementation led LED light source also began to be used in road lighting and subway lighting. In recent years, China has developed and produced hundreds of road and tunnel lighting enterprises that use white LED as a light source, and the number of metro lines that use LED as an illumination source is also gradually increasing.