Comparison is made of effects on visibility of otherwise unlit objects of four types of vehicle lighting used by drivers in lighted streets; observers were driven at 30 mph in car along straight well-lit track toward stationary opposing vehicle showing same type of lighting; 4 ft high target was placed at various positions on track between 400 ft ahead of and 300 ft behind opposing lights; distances were measured at which each of six observers positively detected target, and recognized orientation of small projection on top of target.
Effects of different systems of vehicle lighting on driver's ability to see dark objects in well lit streets
Great Britain. Ministry of Transport -- Road Research Laboratory -- Report
1967
18 pages
Report
English
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