DETERMINING THE VISIBILITY LIMIT OF ROAD OBJECTS IN A FOGGY ENVIRONMENT WHEN USING HEADLIGHTS.
Keywords:
object, methods, contrast, magnitude, adaptation, visibility, meteorological range, contrast, angular sizes.Abstract
The article discusses methods for determining the actual visibility range of non-self-luminous objects illuminated by headlight beams at night in foggy conditions. Cases involving objects with large and small angular sizes are analyzed. Tables, graphs, and a nomogram are proposed to determine the actual visibility range based on meteorological visibility for various objects and observation conditions.
References
Golberg M.A. Study of the possibility of measuring atmospheric transparency on the hydrometeorological service network based on the intensity of scattered light. Dissertation for the degree of candidate of physical and mathematical sciences. Minsk, 1963, pp. 55-57.
Boldyrev N.G., Barteneva O.D. Visibility range of real objects at dusk and at night. Proceedings of the Main Geophysical Observatory, 1961, issue 118, pp. 3-16.
Boldyrev N.G., Barteneva O.D. On the relationship between the threshold of contrast sensitivity and visual acuity, used as the basis for calculating the visibility range of objects. Proceedings of the Main Geophysical Observatory, 1961, issue 109, pp. 53-60.
Boldyrev N.G. Visibility range of real objects. - Proceedings of the Main Geophysical Observatory, 1950, issue 19(81), pp. 14-24.
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