论文信息 - The Contribution of Vehicle Headlights to Visibility of Targets in Road Lighting Environments

The Contribution of Vehicle Headlights to Visibility of Targets in Road Lighting Environments

In this paper road lighting measurements were made to study the impacts of vehicle headlights on luminance contrasts of targets located on the road. Experimental measurements were made on a highway to investigate the contribution of halogen and high-intensity discharge headlights to road lighting. The measurement results indicate that in general, the use of vehicle headlights, in the presence of road lighting, does not improve the luminance contrasts of targets located on the road. The impacts of vehicle headlights are highly dependent on the vehicle, headlights type, target reflection factor, position of the target, position of the vehicle and road lighting installation. The effects of HID headlights on targets luminance contrasts were more significant compared to the ones of halogen headlights. Copyright © 2008 Praise Worthy Prize S.r.l. - All rights reserved.

Marjukka Eloholma | Liisa Halonen | Aleksanteri Ekrias

[1] Erik Randrup Hansen,et al. REFLECTION FACTORS FOR PEDESTRIAN'S CLOTHING , 1979 .

[2] A Bacelar. The contribution of vehicle lights in urban and peripheral urban environments , 2004 .

[3] Michael Sivak,et al. Field measurements of direct and rearview-mirror glare from low-beam headlamps , 2002 .

[4] M. S. Janoff. Toward Development of a Visibility Model for Roadway Lighting Design , 1993 .

[5] Michael Sivak,et al. Quantitative comparisons of factors influencing the performance of low-beam headlamps , 1999 .

[6] F. C. Smith. Reflection Factors and Revealing Power , 1938 .

[7] Önder Güler,et al. The effect of luminance uniformity on visibility level in road lighting , 2003 .

[8] Yukio Akashi,et al. THE EFFECT OF ONCOMING HEADLIGHT GLARE ON PERIPHERAL DETECTION UNDER A MESOPIC LIGHT LEVEL , 2001 .