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Title: SIMPLE MODEL OF FORWARD VISIBILITY FOR SNOWPLOW OPERATORS THROUGH SNOW AND FOG AT NIGHT
Accession Number: 00740703
Record Type: Component
Record URL: Availability: Transportation Research Board Business Office 500 Fifth Street, NW Find a library where document is available Abstract: Backscattered light reflected from falling snow, rain, and fog impairs visibility and can hinder performance of snowplow operators. New York State Department of Transportation snowplow operators cite backscattered glare as an important problem, and many drivers use their own "solutions" to counteract it. A literature review yielded two important conclusions: backscattered light from a lamp in fog and falling snow is reduced, and visibility is improved (a) as the lamp is moved away from the operator's line of sight and (b) with a narrow-beam lamp. Field tests of lighting configurations during inclement weather were conducted to determine the effects of beam type and displacement from the operator's line of sight on visibility, glare, and satisfaction. On the basis of these data and the literature, a simple mathematical model was developed that predicts the forward-visibility ratings of snowplow operators. This model can be used to guide specifiers in selecting light sources and mounting locations for snowplow operations.
Supplemental Notes: This paper appears in Transportation Research Record No. 1585, Safety and Management in Maintenance and Construction Operations.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Bullough, JRea, M SPagination: p. 19-24
Publication Date: 1997
Serial: ISBN: 0309061563
Features: Figures
(5)
; References
(14)
; Tables
(2)
TRT Terms: Old TRIS Terms: Subject Areas: Highways; Maintenance and Preservation; Safety and Human Factors; Vehicles and Equipment; I62: Winter Maintenance
Files: TRIS, TRB
Created Date: Sep 18 1997 12:00AM
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