Urban road lighting projects require comprehensive consideration of road width, lamp power, and the surrounding environment. Each factor impacts the final lighting effect, driving safety, and pedestrian safety. Below, we've summarized several key considerations for street lighting.
1. Streetlight Type Selection
Streetlights are classified in various ways. Based on their light source, they can be categorized as LED, induction lamps, energy-saving lamps, high-pressure sodium lamps, and metal halide lamps. Based on their application, they can be categorized as standard streetlights, high-mast streetlights, garden streetlights, and landscape streetlights. Other types include single-arm streetlights, double-arm streetlights, combination streetlights, and solar streetlights. Therefore, when constructing urban road lighting projects, it's important to select lamps that match the function and nature of the road.
2. Streetlight Sources
Streetlight source categorization includes LED, induction lamps, standard energy-saving lamps, high-pressure sodium lamps, and metal halide lamps. Each type of streetlight source has its own unique characteristics. In recent years, LED streetlights have become widely used. They are energy-efficient, environmentally friendly, long-lasting, easy to maintain, and affordable. Many countries are actively promoting their use. LEDs are the recommended light source for streetlights and are the preferred choice for road lighting projects.
3. Streetlight Spacing
The spacing between streetlights is determined by factors such as their lighting power, height, and road width. The ratio of streetlight spacing to pole spacing is generally 3.8-4 times. The vertical spacing between streetlight fixtures is generally 30 to 50 meters. Where power lines or other utility poles are present, the spacing should be 40 to 50 meters. It is best to use the same power and lighting poles to save investment. For underground cable power supply, the spacing should be small, ensuring more uniform illumination. Spacing is typically 30 to 40 meters.
4. Streetlight Height
Streetlight heights (streetlight pole heights) generally range from 6 meters, 8 meters, 10 meters, 12 meters, and 15 meters. The height of the pole should be determined based on the actual road width. Generally, for single-sided lighting, the streetlight height should be consistent with the road width, or the pole should be approximately 1 meter shorter than the road width.
5. About Streetlight Offices
Streetlight Offices, or streetlight management offices, are primarily responsible for the planning, construction, management, and maintenance of county road lighting projects; lighting management of public places and scenic spots within the county; energy-saving utilization of road lighting products; and guidance on the construction of building (structure) lighting projects compatible with county road lighting designs and streetlight construction in townships and towns.
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