Traffic Volume Characteristics on Urban Freewaysby Kenneth W. Heathington, (M.ASCE), Asst. Prof. of Civ. Engrg.; Purdue Univ., Lafayette, IN,
Paul R. Tutt, Highway Design Safety Engr.; Texas Highway Dept., Austin, TX,
Serial Information: Transportation Engineering Journal of ASCE, 1971, Vol. 97, Issue 1, Pg. 105-116
Document Type: Journal Paper
Various traffic characteristics for urban freeways are derived from data recorded at 15 urban locations in 1965 and 19 urban locations in 1963. This study was directed toward developing methodology for estimating traffic volumes. Short-time peak volumes are used to estimate volumes of longer duration such as for a 24-hr period. These expansion factors are developed on a directional basis. Other characteristics such as beginning times of peak periods as a function of urban size are examined. Empirical lane distributions on multilane facilities are developed.
Subject Headings: Urban areas | Highways and roads | Traffic volume | Empirical equations | Traffic analysis
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