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Computer Simulation Evaluation of Current U.S. and European Headlamp Meeting Beams, and a Proposed Mid Beam
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English
Abstract
A computer simulation of a nighttime meeting between two vehicles is described, including results showing the correspondence between predicted visibility distances and those obtained in field tests. The simulation is used to compare visibility distances and glare effects in meetings between vehicles equipped with the U.S. low beam, European low beam, and an experimental mid beam, in various conditions of aim.
Results of this study suggest that differences between European and U.S. low beams are of little practical consequence. By comparison, the mid beam appears to offer a potentially improved meeting beam, pending resolution of problems of rearview mirror glare, beam switching, etc.
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Citation
Mortimer, R. and Becker, J., "Computer Simulation Evaluation of Current U.S. and European Headlamp Meeting Beams, and a Proposed Mid Beam," SAE Technical Paper 740311, 1974, https://doi.org/10.4271/740311.Also In
References
- Mortimer R. G. Becker Judith M. “Computer Simulation to Predict Night Driving Visibility as a Function of Headlamp Beams.” Proceedings of First International Conference on Driver Behavior International Driver Behavior Research Association Zurich October 1973
- Mortimer R. G. Becker Judith M. “Development of a Computer Simulation to Predict the Visibility Distance Provided by Headlamps.” Motor Vehicle Manufacturers Association, Inc.; Highway Safety Research Institute, University of Michigan Report UM-HSRI-HF-73-15
- Rumar K. Helmers G. Thorell Marianne “Obstacle Visibility with European Halogen H 4 and American Sealed Beam Headlights.” University of Uppsala Sweden Report 133 1973
- Mortimer R. G. Olson P. L. “Passenger Car and Truck Headlighting Research: Development of a Field Testing Methodology and Beam Pattern Evaluations.” Motor Vehicle Manufacturers Association, Inc.; Highway Safety Research Institute, University of Michigan Report UM-HSRI-HF-73-14 1973