Establish Design Criteria
The IES separates Roadways from Streets based on a lack of pedestrian and cyclist interaction (IES RP-8-18, page 3-1). Roadways are therefore considered to be Freeways and Expressways. Streets are essentially everything else. In our example for this class we will be lighting a “street”.
From IES RP-8-18, Table 11-1:
Street Classification: Collector
Pedestrian Area Classification: Medium
Pavement classification: R4 (Smooth asphalt)
Average luminance: 0.6 cd/m2
Uniformity Ratios: Lavg/Lmin = 3.5, Lmax/Lmin = 6.0
Max. Veiling luminance ratio: 0.4 (Max Lv/Lavg)