30~50 meters (conventional roads) or 15~30 meters (urban roads)
The spacing of street light poles needs to be determined based on factors such as road type, pole height, light source power, etc. The following is a specific classification description:
1. Classification by road type
Urban roads
Main roads: Usually the spacing is 30~40 meters (when the pole height is 8~12 meters, the spacing is 3~4 times the height).
Secondary roads or branch roads: The spacing may be shortened to 15~30 meters, especially when the light source power is low or the road is narrow.
Landscape lights/garden lights: Due to low power, the spacing can be shortened to about 20 meters.
Rural or suburban roads
The spacing is usually larger, about 30~50 meters, and a single-side lighting method can be used when the traffic volume is low.
Expressways or expressways
The recommended spacing for 12-meter high pole lights is 30~50 meters (about 25 poles per kilometer for a one-way lane).
2. Classification by light pole height
4-meter light pole (community road): spacing 8~12 meters.
6-meter light pole (rural road): spacing 15~20 meters.
8-meter light pole: spacing 25~30 meters (staggered lighting).
12-meter light pole: spacing 30~50 meters (symmetrical lighting).
3. Other influencing factors
Light source power: For example, when a 60W lamp head is equipped with a 6-meter pole, the spacing is 15~18 meters; the higher the power, the larger the spacing can be.
Road width: When the width exceeds 15 meters, lights need to be laid on both sides, and the spacing needs to be adjusted accordingly.
Special road sections: The spacing needs to be shortened at bends or corners to avoid blind spots.
