Economic and social factors affecting highway use
Charles P. Gratto, Pennsylvania State University. Institute for Research on Land and Water Resources. Highway Impact Research Program, Pennsylvania. Dept. of Highways, United States. Bureau of Public Roads
Pennsylvania State University, 1969 - Transportation - 46 pages
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01 level adult males age of household Area Transportation Study auto driver trips automobiles operated average age Bureau of Population Correlation Coefficients Correlation Variable Coefficient decreasing rate Department of Highways destination studies driver trips varied economic characteristics employed head employed persons Estimated Auto Driver estimated household income estimated household wealth found between auto four interchange Gratto greater number Head A5 head of household highway system household and number household Auto driver household members household social household under A5 Interchange Comunity interrelationships kindred workers licensed drivers male head number of adult number of auto number of automobiles number of employed number of licensed number of persons operated by household origin and destination Pennsylvania State University percent increase persons and licensed Pittsburgh Area Transportation Presence or absence rate with increments residential density social and economic statistically significant Trips for Selected trips were directly Unpublished master's thesis variation in auto variation in highway York County