Using Visual Range Data For Highway Operations In Blowing Snow

1 February 1984

journal article
Published by SPIE-Intl Soc Optical Eng in Optical Engineering

Vol. 23 (1) , 230155-230155-
https://doi.org/10.1117/12.7973253

Abstract

This paper describes characteristics of visual range attenuation in blowing snow in relation to motorist vision. Visual range V is related to wind speed U according to V = AU-5 with the A coefficient changing in response to snow availability. A lower limit for visual range is described with A =1.1 X108 m6 s-5. An operational monitoring system used on Interstate Highway 80 in Wyoming demonstrates how real-time computer analysis of photometric data can be used to determine the A value, interpret visual range in terms of vehicle operation, and provide automated traffic operations decisions.

Keywords

VISION

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