Set illuminator on the road in order to illuminate the road at night. Help to improve road capacity and ensure traffic safety. Road lighting was originally lit by wood. Winter, appeared on the streets of Paris in 1667 lamp. With gas lamps on the streets of Baltimore City, the United States in 1806. In 1842, the Paris street lighting by arc lamps. In 1878, the British first to use carbon filament incandescent lamp. 1932, low pressure sodium lamp appears on the Dutch streets. 1935 advent of high-pressure mercury lamp. 1965 HPS beginning for road lighting. China in 1865 in Shanghai, Nanjing Road began using gas lamps, installed in 1882 at the Bund arc lamp, 1890 began with an incandescent lamp. After more use of high-pressure sodium street lighting, because of its high luminous efficiency. In addition, incandescent, high-pressure mercury lamp, low pressure sodium lamps, fluorescent lamps and so on. Just make the road lighting has a certain brightness, increase the brightness difference between the object and the road, so the driver can recognize the outline of a person or thing can be. Quality road lighting generally available surface brightness, uniformity, glare, induced four indicators to measure. Brightness is reflected on the road surface of the quantity of light per unit area, in units of nits. Uniformity is the uniformity of the surface brightness distribution, such as uneven distribution of the disorder is difficult to be found, the driver's visual comfort poor. Glare is the direct glare to produce visually impaired driver's eye and not see the phenomenon of the object. Induced with lighting to inform the driver about the road ahead linear, undulating, cross, division of traffic information. Road lighting luminaire can be arranged symmetrically arranged on both sides of the road, staggered, one side of the arrangement, the central road suspension layout, etc., depending on the width of the road choice. Usually more than 20 meters wide road and welcome symmetrical on both sides of the road layout, 15 to 20 meters wide on both sides of the road may consider staggered, narrow roads is available on side. Tian Bo identification Lighting Engineering Co., Ltd. was established in 2011 with registered capital of 5.01 million, is the Zhengzhou Municipal and Rural Construction Committee approval has urban and road lighting engineering contractor tertiary qualifications and identity-oriented system design, production, construction as one of the Specialization large joint-stock companies. I mainly undertake: road lighting, bridge lighting, landscape lighting, square lighting, architectural lighting body building, tower lighting, LED display / LED characters and city public environmental labeling wayfinding systems, city district / zone / industrial agglomeration District wayfinding systems, scenic landscape and environmental identity wayfinding systems, real estate real estate logo wayfinding systems, large chain business center identifies wayfinding systems, road traffic environment to identify wayfinding systems, educational institutions environmental health wayfinding systems, financial institutions logo wayfinding system fabrication and installation services. Day Bo lighting project's official website: http: //www.hntianbo.com/ TIANBO lighting project microblogging: http: //weibo.com/hntianbo001/home wvr = 5 days Bo lighting project blog:? Http: // blog. sina.com.cn/u/2917629177