DOT uses recommendations established by the Illuminating Engineering Society of North America (IES) to provide appropriate light values and uniformity in the City right-of-way and produce a comfortable and safe street environment. In addition to lighting characteristics, the agency considers the design qualities of poles and luminaires with an eye to maintaining an aesthetically consistent and coherent streetscape within a neighborhood or corridor. Accordingly, the agency does not approve block-by-block variations in types of street lights.
Designers should also review the Street Lighting Design Review Process for submittal and approval requirements and coordination with the Street Lighting Engineering Unit . For signal system guidance, refer to the DOT Traffic Signals/Timings Design Requirements, which outline design criteria, required components, and key review steps coordinated by DOT Traffic Signals Engineering.