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Essays

 

I. Roadway Lighting (Using R3 type pavement = slightly specular asphalt)

Area to be Lit Average Maintained Desired Uniformity Ratio Illuminance (Avg/Min)in foot-candles
Expressway 3/1 1.2
Major Road 3/1 1.3
Collector Road 4/1 0.9
Local Road 6/1 0.4

Expressway: major divided highway

Major Road (Arterial): the principal network for through traffic

Collector: the streets between Major and Local roads (residential)

Local: access roads to residential properties.

 

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