Arranging street lights and determining their height and spacing depends on the width of the pavement. There are three main types of lamp arrangements: single side arrangement, double side staggered arrangement, and double side symmetric arrangement. The relationship between road width and lamp arrangement is simplified and summarized in the table below. For roads with a width of 12 meters or less, we can simplify by saying that the height of the streetlights should be proportional to the width of the road surface, and the spacing between them should be 3-4 times the height of the street lamps.
Day lighting time refers to the number of hours the solar street lights are illuminated each night. These lights come with an automatic intelligent controller that detects the brightness levels at the surface. Once the brightness drops to a certain value during nighttime, the lights automatically turn on. After 6 hours from the time the light source is turned on, it will automatically turn off. However, the lighting hours can be adjusted according to the user's preference, from as little as 1 hour to overnight, starting from dark until dawn.
It's worth mentioning that for every additional hour of lighting, the cost increases by around 300-400 yuan. Therefore, users should consider their economic constraints when deciding on the number of lighting hours needed during the day. The choice of lighting hours can be tailored to meet the specific requirements and budget of the user.