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原文传递 Effects of Road Marking Luminance Contrast on Driving Safety.

题名：	Effects of Road Marking Luminance Contrast on Driving Safety.
作者：	wang, j. h. cao, y.
关键词：	videos, equipment deisgn, effects, simulation, literature reviews, methodology, analysis, pavement markings, age, gender
摘要：	This report presents a study on the effects of road marking luminance contrast on driving safety. Through laboratory driving simulation experiments, road marking color, configuration, luminance contrast, driving speed, subjects age and gender, and their interactions, were investigated. Thirty-six subjects balanced by age and gender participated in the experiments. Each subject was presented with a series of digitally edited video clips showing different levels of marking luminance contrasts. The subject was required to make responses to the video stimuli based on marking color and configuration the video presented. It found that subjects responses dropped with the increment of road marking luminance contrast values, but at different rates during different contrast segments. White markings are more visible than yellow markings. Driving at higher speed got faster responses but longer response distances. Older subjects took the longest responses while younger subjects took the least. Female subjects responded a little bit slower and needed longer response distances than males. To warrant proper responses and assure safe driving, the minimum contrast values for white and yellow road marking are estimated to be 1.1 and 3.3-3.5 respectively. When road markings contrast values are below these thresholds, a repair or repaint on road markings might be needed. / NOTE: Final rept. May 02-Nov 03. / Supplementary Notes: Sponsored by Federal Highway Administration, Providence, RI. Rhode Island Div. and Rhode Island Dept. of Transportation, Providence. Research Technology Development Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
报告类型：	科技报告