①It is determined according to the nature of the road: the pole spacing for urban roads is 20-50 meters; for countryside roads, parks and courtyards, etc., when the light source is relatively weak, the interval is about 15~20 meters. ②The installation interval is also affected by the power of the street solar LED lights and the height of the light pole. For example 60W solar street light, the pole height is 6 meters and the interval is 15-18 meters; the pole height is 8 meters and the interval is 20-24 meters; the pole height is 12 meters and the interval is 32-36 meters. The installation position of street light solar lamps generally adopts the following three lighting methods: single-side lighting, two-side cross lighting, and two-side symmetrical lighting.