Enhanced Night Visibility Series, Volume VII: Phase II - Study 5: Evaluation of discomfort glare during nighttime driving in clear weather.

Author(s)
Porter, R.J. Hankey, J.M. Binder, S.C. & Dingus, T.A.
Year
Abstract

Phase II—Study 5 helped expand the knowledge of how current vision enhancement systems (VESs) affect the discomfort glare experienced by nighttime drivers. The empirical testing for this study was performed on the Smart Road. Sixty participants were involved in the study, which consisted of two data collection efforts. An 11 (VES) by 3 (Age) experimental design was used to investigate the effects of different types of VESs and driver’s age on discomfort glare. In addition, an evaluation of the Schmidt-Clausen and Bindels equation was performed to determine its predictive value in driving scenarios with oncoming glare. The results of the empirical testing suggest that halogen headlamps selected for this testing produce more discomfort glare than the high intensity discharge headlamps tested. There was also some indication that ultraviolet (UV)–A may add slightly to discomfort glare. In addition, modifications of the Schmidt-Clausen and Bindels equation may provide headlamp designers with insight into how drivers will rate discomfort glare of proposed headlamps. (Author/publisher)

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Publication

Library number
C 37401 [electronic version only]
Source

McLean, VA, U.S. Department of Transportation DOT, Federal Highway Administration FHWA, Turner-Fairbank Highway Research Center, Research, Development and Technology, 2005, IX + 64 p., 24 ref.; FHWA-HRT-04-138

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.