Intersection lighting increases motorist and pedestrian visibility and reduces crash potential. No specific warrants have been established for intersection lighting. Lighting should be installed at those locations where a qualified lighting engineer has determined that lighting will contribute to the efficiency, safety, and/or comfort of motorists and pedestrians. In an effort to improve visibility of pedestrians, the preferred location of light standards for intersection and midblock crosswalks is illustrated below.
Most state DOTs, as well as the Illuminating Engineering Society of North America, have developed criteria to assist in determining lighting requirements. When designing lighting, the following factors should be considered: luminaire type, wattage, mounting height, and pole location. A qualified lighting engineer should evaluate intersection lighting.