The following Table 5.1 illustrates the minimum Illumination requirements of both IESNA and RTAC for residential roads:
Table 5.1: IES Versus RTAC Standards
|
R2
and R3 Roads |
Guideline |
Average
Illuminance |
Average/Minimum
Uniformity |
|
Residential
Collector |
IES |
6
lux |
4
to 1 |
|
RTAC |
10
lux |
3
to 1 |
|
|
Residential
Local |
IES |
4
lux |
6
to 1 |
|
RTAC |
6
lux |
6
to 1 |