Fog accident prevention study : visibility of colored luminous areas in fog. Final report.

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Year
Abstract

A series of subjective visibility tests, performed with luminous area, red-light sources of different sizes in artificially generated fog, show that in daytime fog of 50-ft visual range and night-time fog of 100-ft visual range, there wee no appreciable difference in visibility between 2-in. -diameter and 6-in. -diameter sources of equal intensities, In night-time fog of 500-Pt visual range, the larger source was found to be somewhat more visible than the smaller one.

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Publication

Library number
A 7332
Source

Berkeley, CA, University of California, Institute of Transportation and Traffic Engineering, 1969, 32 p., 7 ref.

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