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.
Road Classification | Average Illuminance fc | Uniformity Ratio Eavg/Emin |
|---|---|---|
Arterial | 0.9 | 3.0 |
Collector | 0.6 | 4.0 |
Local | 0.4 | 6.0 |