Visibility from Vehicle Headlamps and Roadway Lighting in Urban, Suburban and Rural Locations 2010-01-0298
In real world driving conditions, illumination from vehicle headlamps and, when present, from fixed roadway lighting combines to provide visibility for the driver. We present analyses of visibility along a representative roadway intersection scenario with median and market-weighted headlamp beam patterns including halogen and high intensity discharge headlamp beam patterns, and high beam headlamp beam patterns. Also investigated are interactions with the spatial extent of roadway lighting, either as part of a continuous lighting system or as a single roadway luminaire at the intersection junction, and the role of ambient illuminance from urban environments. The results of the analyses show the large influence of ambient illuminance from urban areas on the visibility of relevant targets, and show differential advantages of different headlamp beam patterns for different target locations where pedestrians might be encountered.
Citation: Bullough, J. and Rea, M., "Visibility from Vehicle Headlamps and Roadway Lighting in Urban, Suburban and Rural Locations," SAE Technical Paper 2010-01-0298, 2010, https://doi.org/10.4271/2010-01-0298. Download Citation
Author(s):
John D. Bullough, Mark S. Rea
Affiliated:
Rensselaer Polytechnic Institute
Pages: 7
Event:
SAE 2010 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Automotive Lighting Technology and Human Factors in Driver Vision and Lighting, 2010-SP-2266
Related Topics:
Headlamps
Visibility
Vehicle drivers
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