Limits light spilling into residential windows (Light Trespass).
It defines classifications for pedestrian activity (Low, Medium, High), which dictates the required light levels to ensure safety.
(Recommended Practice for Design and Maintenance of Roadway and Parking Facility Lighting) is the definitive North American standard for lighting the public right-of-way. Released by the Illuminating Engineering Society (IES)
Tunnels, roundabouts, toll plazas, and work zones.
At its core, RP-8-18 is a comprehensive aggregation of several previous IES standards. It serves as the primary technical basis for designing fixed lighting systems for:



