Drivers' headlight use: a lighting factoid

被引:0
|
作者
Boyce, P.R. [1 ]
Fan, J. [1 ]
机构
[1] Rensselaer Polytechnic Inst, Troy, United States
来源
Lighting research & technology | 1994年 / 26卷 / 01期
关键词
Clouds - Light - Lighting - Meteorology - Optical variables measurement - Roads and streets - Vehicles;
D O I
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中图分类号
学科分类号
摘要
The relationship between the horizontal illuminance on the road and the number of vehicles using headlights is quantified for five different sites in upper New York State. The horizontal illuminance at which 50% of vehicles are using their headlights is significantly different for clear and cloudy sky conditions and for the different sites. The resulting road surface luminances at which 50% of vehicles have their headlights on are, for all sites and sky conditions, much higher than similar measurements carried out in the Netherlands in 1958.
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页码:23 / 27
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