Positioning principles for road lighting design | 1. It is best to consider the lights at intersections and crosswalks first. Generally, a plan design can be made first, but the final design still needs to be measured on the spot. 2. 1.5 meters away. It is best to have a clear boundary along the road. 3. When setting up street lights on roads within 3 miles (or 4.8 kilometers) around the airport, you should contact the airport in advance. Because no lights that hinder flight routes are allowed around the airport. 4. Similarly, care should be taken to avoid interfering with their signals or emitting too bright glare near railways, docks, and waterways.