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An Optimized Method for Mapping Headlamp Illumination Patterns
ISSN: 0148-7191, e-ISSN: 2688-3627
To be published on April 06, 2021 by SAE International in United States
Event: SAE WCX Digital Summit
Understanding the specific illumination pattern of a vehicle headlamp beam is useful for the evaluation of nighttime visibility issues in accident reconstruction. There are several challenges associated with traditional headlamp mapping techniques, including that mapping must be conducted in darkness, the mapping location topography may be different than the incident location, maintaining a measurement grid is difficult to accomplish in the field, data acquisition requires multiple parties, and time. Traditional techniques require the surrounding surface to be permanently marked in the evening in order to allow for future data collection of the mapped points in daylight conditions. The methodology presented here alleviates some of these challenges through real-time data collection and by accounting for topographical differences, which eliminates the requirement that mapping be conducted on a level surface, and the number of required participants. This study presents an optimized single-person methodology for measuring and documenting headlamp illumination patterns.