Table 7. Pedestrian ramps, stairs, steps

Intensity of activity Zone Recommended maintained illuminance targets (lux) Uniformity targets over area of coverage
Horizontal targets (EH) Vertical targets (Ev)
Visual ages of observers where at least half3) Visual ages of observers where at least half If different uniformities apply (EH: Ev)
<25 25∼65 > 65 <25 25∼65 >65 Min:Ave Ave:Min
Medium LZ4 E 4 8 16 C 2 4 8 4:1 5:1
LZ3 D 3 6 12 B 1 2 4 4:1 5:1 (10:1)
LZ2 C 2 4 8 B 1 2 4 4:1 5:1 (10:1)
LZ1 B 1 1 2 A 0.5 1 2 4:1 5:1 (10:1)
LZ0 A 0.5 1 2 - 0 0 0 4:1