Street lights are usually divided according to the shape of light. Specific division methods, the International Lighting Commission (CIE) recommends that it is projected, expanded, and controlled three items.

1. Project. It means that the degree of diffusion of the light from the road is divided into three types: short, medium, and long.

2. Extension. The degree of diffusion of light emitted by lamps in the horizontal road is divided into three types: narrow, general, and wide.

3. Control. It means that the lamp controls the degree of glare, divided into three types: limited, medium, and strict.

The installation methods of street lights include brackets, tall, straight rods, suspension and wall -absorbing types.