Proper street light pole spacing ensures safety, uniform illumination, and cost efficiency in lighting projects. This guide covers standard distances, factors affecting spacing, and practical tips for electrical engineers.

Standard Spacing by Pole Height

Common industry practice recommends spacing street light poles at 2.5 to 5 times the pole height.

Key Factors Affecting Distance

Road width: Wider roads need closer spacing for full coverage.
Lighting class: C3 class requires tighter 3× height spacing.
Luminaire optics: LED asymmetric lenses allow 4-5× spacing.
Traffic speed: Highways need brighter, closer lights.

Common Mistakes to Avoid

Using fixed spacing without site survey.
Ignoring road curvature or intersections (reduce spacing by 20%).
Over-spacing for energy savings, creating dark zones.
Neglecting maintenance access (minimum 1.5m pole base clearance).