Light source selection
The choice of the light source should meet the following requirements:
1 High-pressure sodium lamps should be used for expressways, main roads, secondary roads and branch roads;
2 High-pressure sodium lamps or low-power metal halide lamps should be used in mixed traffic roads for motor vehicles and pedestrians in residential areas;
3 Metal halide lamps can be used for motor vehicle traffic, such as city centers and commercial centers, which require high color identification;
4 Pedestrian streets in industrial areas, sidewalks in residential areas, and sidewalks on both sides of motorway traffic can use low-power metal halide lamps, narrow-bore fluorescent lamps, or compact fluorescent lamps.
Road lighting should not use self-ballasted high-pressure mercury lamps and incandescent lamps.
Lamps and accessories selection
Motorized vehicle lighting should use functional lamps that meet the following requirements:
1 Expressway or trunk roads must use light-cut or semi-bright light fixtures;
Half-cut light fixtures should be used for the secondary roads;
3 Branches should use half-light fixtures.
Pedestrian streets, pedestrian roads, pedestrian tunnels, pedestrian bridges, and non-motorized lanes that require separate lighting should be equipped with functional and decorative lamps.
When decorative lamps are used, the ratio of the upper light-emitting rate should not exceed 25%, and the mechanical strength should meet the requirements of the current national standard “General Safety Requirements and Tests for Luminaires” GB7000.1.
When lighting with high poles
Floodlights or cut-off luminaires with suitable power and light distribution should be selected according to the characteristics of the site.
1. When using sealed road lighting, the protection level of the light source cavity should not be lower than IP54.
2. For roads and places with dangerous environmental pollution and heavy maintenance, the protection level of the light source cavity should not be lower than IP65.
3. The degree of protection of the lamp electrical appliance cavity should not be lesser than IP43.
Lamps with excellent corrosion resistance should be used in areas or places with high levels of corrosive gases such as acid and alkali in the air.
1. For large-scale bridges where motor vehicles are used, etc., where strong vibrations are likely to occur, the lamps used shall meet the vibration-proof requirements stipulated in the current national standard “General Safety Requirements and Tests for Luminaires” GB7000.1.
2. High-intensity gas discharge lamps should be equipped with energy-saving magnetic ballasts, and light sources with smaller power can be fitted with electronic ballasts.
3. The trigger of the high-intensity discharge lamp, ballast and light source installation distance should meet the requirements of the product.