1 General Provision
1.0.1 This standard is formulated with a view to guarantee the urban road lighting can provide good visual environment for various kinds of drivers and pedestrians so as to keep traffic safety, improve traffic efficiency, make convenience for people's living, reduce crime rate and beautify the urban environment.
1.0.2 This standard is applicable to the lighting design of newly-constructed, extended and renovated urban roads and their connected classified locations; it is not applicable to the design of tunnel lighting.
1.0.3 The design of road lighting shall be carried out according to the principle of safety and reliability, state-of-the-art technology, economic feasibility, energy conservation and environmental protection and convenient maintenance.
1.0.4 For the design of road lighting, not only the requirements stipulated in this national standard but also those in the current relevant ones of the nation shall be complied with.
2 Terms
2.0.1 Urban Road
It refers to the road which is of certain technical conditions and facilities and is opened to both vehicle and pedestrian. Urban roads are classified into express way, major road, collector road, local road and residential road according to their statuses, traffic functions as well as service functions for the structure and urbanite along the line.
2.0.2 Express Way
It refers to the road serviced as the express traffic and being long distance and high traffic capacity in the cities. Central reservation is adopted to separate the opposite roadways. Total control and part control are adopted at entrance and exit.
2.0.3 Major Road
It refers to the trunk road which connects the main subareas. The mode which vehicle and non motor vehicle are separated from each other, such as three-roadway road or four-roadway road is adopted.
2.0.4 Collector Road
It refers to the road combining with major roads, which spread the heavy traffic flow.
2.0.5 Local Road
It refers to the road that connects the collector road and residential road.
2.0.6 Residential Road
It refers to the road in residential areas and the street which is opened to pedestrian and non-motor vehicle.
2.0.7 Conventional Road Lighting
It refers to a lighting mode that luminaries are installed on the light staffs whose height are not higher than 15m and set up regularly and continuously at one side, both sides or central reservation according to certain distance. If the mode is adopted, longitudinal axis of luminaries is vertical with road axis to make a majority of light shooting at the direction of longitudinal axis. 2.0.8 High Mast Lighting
It refers to the lighting mode that a set of luminaries are installed on the light staff for large area lighting. The height of the light staff is equal to or larger than 20m.
2.0.9 Semi-height Lighting
It refers to the lighting mode that a set of luminaries are installed on the light staff whose height is about 15-20m. It is the conventional lighting when luminaire is installed according to the mode of conventional road lighting; and it is the high mast lighting when luminaire are installed according to the mode of high mast lighting.
2.0.10 Cut-off Luminaire
It refers to luminaries meeting the following requirements. Its included angle of the direction of maximum light intensity and downward vertical axis shall be between 0°- 65°. Maximum allowable values of its light intensity at the directions of 90°angle and 80°angle are 10cd/1000lm and 30cd/1000lm respectively. At the same time, regardless of luminous flux of illuminant, the maximum value of its light intensity at the direction of 90°angle shall not exceed 1000cd.
2.0.11 Semi-cut-off Luminaire
It refers to the luminaries meeting the following requirements. Its included angle of the direction of maximum light intensity and downward vertical axis shall be between 0°- 75°. Maximum allowable values of its light intensity at the directions of 90°angle and 80°angle are 50cd/1000lm and 100cd/1000lm respectively. At the same time, regardless of luminous flux of illuminant, the maximum value of its light intensity at the direction of 90°angle shall not exceed 1000cd.
2.0.12 Non-cut-off Luminaire
It refers to the luminaire. Its direction of light intensity is unrestricted, and the maximum value of its light intensity at the direction of 90°angle shall not exceed 1000cd.
2.0.13 Floodlight
It refers to the light projector used for floodlighting and its angle of flare of light beam (the included angle of the two directions when light intensity is 1/10 of peak value of light intensity) is larger than 10°. Generally it can be rotated at all directions.
2.0.14 Luminaire Efficiency
It refers to the ratio of total light flux emerged by the luminaries and total light flux emerged by all illuminants in the luminaries given the same working conditions.
2.0.15 Maintenance Factor
It refers to the ratio of the average illumination or average luminance of the specified road surface after being used a given time and average illumination or average luminance gotten from the same road surface at the same condition when it is installed newly.
2.0.16 Luminaire Mounting Height
It refers to the vertical length from light center of luminaries to road surface.
2.0.17 Luminaire Mounting Spacing
It refers to the distance of the adjacent two luminaire measured along the central line of road.
2.0.18 Overhang
It refers to the horizontal distance from light center to the kerb at the neighboring side, namely the horizontal distance of luminaries protruding or retracting from the kerb.
2.0.19 Bracket Projection
It refers to the horizontal distance from vertical center line of light staff to the point where arm of light is inserted into luminaries.
2.0.20 Effective Road Width
As for the theoretical width of road surface used for road lighting design, it relates to the actual width, luminaire overhang and arrangement mode of luminaries. If unilateral arrangement mode is adopted for luminaries, road effective width is the difference that actual road width minus overhang. If bilateral (containing staggered and opposite) arrangement mode is adopted for luminaries, road effective width is the difference value that actual road width minus two overhang. If centrosymmetrical arrangement mode is adopted for luminaries at the central reservation of two-roadway roads, road effective width is equal to road actual width.
2.0.21 Guidance
Guidance of the lighting facilities refers that the rightly installed road-along light poles and luminaire can provide visual information relevant to the road direction, shape and gradient for drivers.
2.0.22 Average Road Surface Luminance
It refers to the mean luminance value at each preestablished points of the road surface measured or calculated according to relevant provisions of CIE.
2.0.23 Overall Uniformity of Road Surface Luminance
It refers to the ratio of minimum luminance to average luminance.
2.0.24 Longitudinal Uniformity of Road Surface Luminance
It refers to the ratio of minimum luminance to highlight luminance at the central line of the same driveway.
2.0.25 Average Road Surface Illuminance
It refers to the mean illumination intensity value at each preestablished points of the road surface measured or calculated according to relevant provisions of CIE.
2.0.26 Uniformity of Road Surface Illuminance
It refers to the ratio of minimal illumination to average illumination.
2.0.27 Maintained Average Luminance (illuminance) of Road Surface
Namely it is the maintained value of average road surface luminance (illumination intensity). It is the average luminance (illumination intensity) value adopted when such factors (namely: the maintenance factor) as the attenuation of luminous flux and descending efficiency caused by luminaire pollution are counted in design calculation.
2.0.28 Upward Light Ratio
It refers to the percentage of horizontal-direction luminous flux to the total luminous flux at luminaire installation.
2.0.29 Glare
It refers to the discomfort or decreasing ability of target/detail observation resulting from improper intensity distribution or luminance range or violent contrast.
2.0.30 Disability Glare
It refers to decreasing visibility to objects, but discomfortable glare is not always generated.
2.0.31 Threshold Increment
It is used to measure disability glare. It refers that when there is glare source, in order to distinguish the objects, the percentage needs to be increased for luminance contrast between the object and its background.
2.0.32 Surround Ratio
It refers to the ratio of the average horizontal illumination of the 5m-wide region beyond the roadway to that of the adjacent 5m-wide roadway.
2.0.33 Conflict Areas
It refers to regions such as the passageway of road, crossings and crosswalk etc. At such regions, there is increasing possibility of crash between vehicles, vehicles and non-motor vehicles, pedestrians as well as vehicles and fixed objects.
2.0.34 Lighting Power Density (of road surface)
It refers to the installed power (including power consumption by amperite) of lighting on per unit area of road surface.
2.0.35 Remote Terminal Unit
It refers to the equipments which are used for data gathering, treatment, delivery, reception and output in the substation supervised by the main station.
3 Lighting Standards
1 General Provision
2 Terms
3 Lighting Standards
3.1 Road Lighting Classification
3.2 Assessment Index of Road Lighting
3.3 Standard Value of Motor Road Lighting
3.4 Lighting Standard Value of Conflict Areas
3.5 Standard Value of Sidewalk Lighting
4 Selections of Light Source, Luminaire and Attachments
4.1 Light Source Selection
4.2 Selection of Luminaire and Attachments
5 Lighting Modes and Design Requirement
5.1 Lighting Mode
5.2 Lighting Design Requirements of Roads and Connected Classified Locations
5.3 Design Requirements of Non-functional Lighting on Both Sides of the Road
6 Power Supply and Control of Lighting
6.1 Power Supply
6.2 Lighting Control
7 Energy-saving Standard and Measure
7.1 Energy-Saving Standard
7.2 Energy-saving Measure
Appendix A Table of Luminance Coefficient and Simplified Luminance Coefficient of the Road Surface
Appendix B Maintenance Factor
Wording Explanations
