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A Short Study of Seeing Distance
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English
Abstract
This paper describes a computer based study of seeing distance for automobile headlamps. The study extends an experiment in which subjects determined the presence of a target and the identity of the target, while driving. The results of the study show that values of seeing distance for the task of identifying a target in addition to determining its presence while driving the vehicle are lower than values of seeing distance when a driver only needs to determine the presence of a target. The study also includes an analysis of the effect on seeing distance of horizontal misaim which suggests that additional refinement in the specifications of beam patterns would be necessary before horizontal aim adjustment hardware could be eliminated. An approach for developing beam pattern specifications, based on determining intensity requirements for meeting such needs as pedestrian protection and glare reduction, is also suggested.
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Citation
Burgett, A. and Villalba, V., "A Short Study of Seeing Distance," SAE Technical Paper 850232, 1985, https://doi.org/10.4271/850232.Also In
References
- Olson Paul Sivak Michael “Improved Low-Beam Photometrics,” Final Report of NHTSA sponsored contract No. DOT-HS-9-02304 University of Michigan March 1983
- Ford Motor Company “User's Manual for the Comprehensive Headlamp Environment Systems Simulation Model (CHESS-1),” Ford Motor Company, Automotive Safety Office Dearborn, Michigan November 1979
- Bhise Vivek et al. “Modeling Vision with Headlights in a Systems Context,” SAE Paper No. 770238 February 1977
- NHTSA “Submission No. 002 to NHTSA Docket No. 83-12; Notice 1, International Harmonization ,” August 1983
- NHTSA “Final Rule amending FMVSS No. 108,” NHTSA Docket No. 84-04; Notice 2 [FR50176] December 1984
- NHTSA “Preliminary Regulatory Evaluation for a Proposed Amendment to FHVSS No. 108 in Response to a Petition to allow a new headlamp configuration,” NHTSA Docket No. PRM-108-107 Washington, D.C. April 1984
- Schmidt-Clausen Bindels “Assessment of Discomfort Glare in Motor Vehicle Lighting,” Lighting Research and Technology 1974