Road lighting standard Road lighting is to make people on the road see the road surface, to ensure safe driving and walking, reduce the incidence of night accidents; at the same time to beautify the city.
Modern road lighting not only meets the above requirements, but also requires bright, diverse, long-lasting and professional lighting solutions, while reducing system acquisition and maintenance costs.
Road lighting design process (1)
Understand road-related information, including: road width, pavement material (asphalt, concrete), the width of the intermediate barrier, the width of the pedestrian lane, etc. Determine the design standard according to the road conditions. Choose the appropriate lighting method: single-sided cloth, double-sided The cloth light, the central cloth light, and the cross cloth light determine the light pole mode, including: the height of the light pole, the length of the arm, the tilt angle of the lamp, etc., to evaluate the calculation result, and determine whether the standard lamps are installed and debugged, and the construction acceptance is performed.
Technical indicators for measuring road lighting (1)
Brightness: The contrast between the obstacle and the background allows the driver to make timely and accurate judgments.
At present, the average brightness of the road (between 60-160m in front of the observer) is 1.5--2cd/mm (candela/m2), which is suitable for the driver to uniformity of brightness distribution: the road with uniform brightness can reduce the driver. The eye is constantly adapting to the fatigue caused by changes in light and dark.
Mainly represented by two data:
Uo (average uniformity) = LminLr
U1 (longitudinal uniformity) = LminLmax
Lmin - minimum brightness on the road ahead
Lmax - maximum brightness on the road ahead
Lr-average brightness on the road ahead
Uo: Can obstacles on the road ahead see glare control: glare is due to the inaccuracy of brightness distribution and range in the field of view, or extreme brightness contrast in space and time, causing discomfort and reducing target visibility. phenomenon. It is related to the light distribution of the luminaire, the spacing of the luminaires and the installation. According to the different requirements of glare control in different places, street lamps are non-cutting, half-cut, and cut-off.
New and reconstructed urban road main roads for the use of street lamps, lighting for the lighting and exhibition center of the roadside lighting yard of the branch road development zone
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Guangpu Electronics Co., Ltd , http://www.fjledlight.com