Review of optimal road surface luminance considering dazzling by headlight of the car running in the opposite direction
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 11
Abstract
Appropriate road surface luminance shall be provided by roadway lighting for the drivers to recognize the alignment at a certain distance for the safety at night. Luminance of road surface when no median strip is available shall be granted taking into account of dazzling and low visibility due to headlight of the car on the opposite lane. This study thus is intended to analyze the optimal luminance of road surface which allows the driver to recognize the alignment ahead at the high beam condition by the car running in opposite direction. Consequently, 75% of the subject could recognize the alignment 22m ahead when road surface brightness was 0.25ππ/γ‘ and 85% of them could recognize when the brightness was 0.42 ππ/γ‘. The outcome of this study is expected to make commitment to determining the road surface illuminance that will secure the road safety at night.
Authors and Affiliations
Wonbum Cho
Keywords
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