Visibility distances on straight, smooth, level, concrete roads; visibility distance in general, under average hard-surfaced road conditions; effect of opposing lights; necessary vertical and horizontal beam spread; glare and roadside illumination. (See also - discussion p 342-4)
Conclusions from headlight research
Soc Automotive Engrs -- J
Society of Automotive Engineers -- Journal ; 31 , n 2
1932
4 pages
Aufsatz (Zeitschrift)
Englisch
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