Lighting of Isolated Intersections and Interchanges

The recommended lighting levels for isolated intersections, interchanges, and railroad crossings are shown in the table below. These values are based on Table 9 from ANSI/IES RP-8-14, Roadway Lighting. For roadway intersections and interchanges, the road classification with the highest light level should be used. Roadway classifications in this table are defined the same as in the Illuminance and Luminance Design Values table displayed earlier in this section.
Illumination of Isolated Intersections
Road Classification
Average Illuminance
fc
Uniformity Ratio
Eavg/Emin
Arterial
0.9
3.0
Collector
0.6
4.0
Local
0.4
6.0