Urban Road Lighting Design Standards (1)
1.0.1 To ensure that urban road lighting can create a good visual environment for drivers and pedestrians of various vehicles, and to achieve the purpose of ensuring traffic safety, improving transportation efficiency, facilitating people's lives, reducing crime rate and beautifying the urban environment, standard.
1.0.2 This standard applies to the lighting design of new, expanded and rebuilt urban roads and special places connected to the road. It is not applicable to the design of tunnel lighting.
1.0.3 The design of road lighting should be carried out in accordance with the principles of safety, reliability, advanced technology, economical rationality, energy saving and environmental protection, and convenient maintenance.
1.0.4 In addition to complying with this standard, road lighting design should also comply with the relevant national standards.
2 terms
2.0.1 urban road
A road with certain technical conditions and facilities for vehicles and pedestrians within the city. According to the status of roads in the road network, traffic functions, and service functions for buildings along the line and urban residents, urban roads are divided into express roads, trunk roads, secondary trunk roads, branch roads, and residential roads.
2.0.2 Express way express way
The city has a long distance, a large amount of traffic, and a road for fast transportation. An intermediate distribution belt is arranged between the opposite roadways of the expressway, and the import and export are fully or partially controlled.
2.0.3 main road major road
The trunk roads connecting the main sections of the city are separated by motor vehicles and non-motor vehicles, such as three roads or four roads.
2.0.4 secondary road collector road
Combined with the main road to form a road network to serve as a road for the distribution of traffic.
2.0.5 branch road local road
The connecting road between the secondary trunk road and the road in the residential area.
2.0.6 residential roads
Roads in residential areas and streets and lanes mainly for pedestrians and non-motor vehicles.
2.0.7 Conventional lighting
The luminaire is installed on a light pole with a height of usually 15 m or less, and is regularly arranged at a certain interval on one side, two sides or an intermediate sub-carriage belt for illumination. With this type of illumination, the longitudinal axis of the luminaire is perpendicular to the road axis, causing most of the light emitted by the luminaire to be directed toward the longitudinal axis of the road.
2.0.8 high mast lighting
A lighting method in which a group of lamps is mounted on a pole having a height equal to or greater than 20 m for large-area illumination.
2.0.9 Semi-high pole lighting (also known as mid-bar lighting) semi-height lighting
A set of luminaires is mounted on a light pole with a height of 15 to 20 m for illumination. When the luminaire is configured according to the conventional illumination mode, it is a conventional illumination; when the luminaire is configured by the high-pole illumination mode, it is a high-pole illumination.
2.0.10 cut-off luminaire cut-off luminaire
The maximum light intensity direction of the luminaire and the downward vertical axis of the luminaire are between 0° and 65°, and the maximum allowable values ​​of light intensity at 90° and 80° are 10cd/1000lm and 30cd/1000lm respectively. Regardless of the light flux of the light source, the maximum light intensity in the 90° angular direction must not exceed 1000 cd.
2.0.11 Semi-cut-off luminaire
The maximum light intensity direction of the luminaire is between 0° and 75° with the downward vertical axis of the luminaire, and the maximum allowable values ​​of light intensity at 50° and 80° are 50cd/1000lm and 100cd/1000lm respectively. Regardless of the light flux of the light source, the maximum light intensity in the 90° angular direction must not exceed 1000 cd.
2.0.12 Non-cut-off luminaire non-cut-off luminaire
The maximum light intensity direction of the luminaire is not limited, and the maximum light intensity in the 90° angular direction shall not exceed 1000 cd.
2.0.13 floodlight floodlight
The beam spread angle (the angle between the two directions in which the light intensity is 1/10 of the peak light intensity) is larger than 10°, and is used as a light projector for floodlight illumination. It can usually be rotated and pointed in any direction.
2.0.14 luminaire efficiency
The ratio of the total luminous flux emitted by the luminaire to the total luminous flux from all sources within the luminaire under the same conditions of use.
2.0.15 maintenance factor maintenance factor
The ratio of the average illuminance or average brightness obtained on the same surface after the illuminating device has been used for a certain period of time on the same surface as the device is newly installed under the same conditions.
2.0.16 luminaire mounting height luminaire mounting height
The vertical distance from the light center of the luminaire to the road surface.
2.0.17 luminaire mounting spacing
The distance between two adjacent luminaires measured along the centerline of the road.
2.0.18 Cantilever length overhang
The horizontal distance from the light center of the luminaire to the adjacent side rim, that is, the horizontal distance from which the luminaire extends or retracts.
2.0.19 arm length bracket projection
The horizontal distance between the point at which the lamp arm is inserted into the fixture from the vertical centerline of the pole.
2.0.20 effective width of road surface effective road width
The theoretical width of the pavement used for road lighting design, which is related to the actual width of the road, the cantilever length of the luminaire, and the arrangement of the luminaire. When the luminaire is in a single-sided arrangement, the effective width of the road is the actual road width minus one cantilever length. When the luminaire is arranged on both sides (including staggered and opposite), the effective width of the road is the actual road width minus the two cantilever lengths. When the luminaire adopts a central symmetrical non-arrangement on the middle section of the double-width road, the effective width of the road is the actual width of the road.
2.0.21 induced guidance
Proper installation of light poles and luminaires along the road can provide the driver with visual information about the direction, line shape and slope of the road, which is called the induction of the lighting facilities.
2.0.22 average road surface brightness
The average of the brightness of each point measured or calculated at a predetermined point on the road surface in accordance with the relevant regulations of the International Commission on Illumination (CIE).
2.0.23 total uniformity of road surface brightness
The ratio of the minimum brightness to the average brightness on the road.
2.0.24 pavement brightness uniformity uniformity of road surface luminance
The ratio of the minimum brightness to the maximum brightness on the centerline of the same lane.
2.0.25 average road surface illumination illuminance
The average of the illuminances of the points measured or calculated at predetermined points on the road surface in accordance with the relevant provisions of the CIE.
2.0.26 uniformity of road surface illumi-nance
The ratio of the minimum illuminance to the average illuminance on the road surface.
2.0.27 The average brightness of the road surface (illuminance) maintained average lumi-nance (illuminance) of road
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