FUEL CONSUMPTION IS RELATED TO TYPE OF TRAVEL CONDITIONS SUCH AS URBAN For 1965-75, total travel aTravel for 1957-64 includes motorcycles. excludes motorcycles while urban/rural distribution is based on percentages calculated from vehicle-miles which includes motorcycles. bUrban" consists of travel on all roads and streets in urban places of 5,000 or greater population. Source: U.S. Department of Transportation, Federal Highway Table 1.58 Average Miles Traveled by Type of Highway Motor Vehicle, 1950 through 1976 b Ridge National Laboratory, Oak Ridge, Tenn. Also, see TERA, Inc. and D. L. Greene, VMT Statistics, Lifetime VMT and Current State Method of Estimating VMT, ORNL/TM-6327, Oak See Table 1.59 for a comparison of estimate of average annual-miles driven by passenger cars. Estimated VMT for registered motorcycles only. See Table 1.72 for discussion of motorcycle VMT. dsignificant difference in values for 1971 and the corresponding values for 1970 represents a change in the basic assumptions of miles per vehicle and miles per gallon, not a shift in the trend. NA I Not available. Source: Annual, Table VM-1. U.S. Department of Transportation, Federal Highway Administration, Department of Transportation News, Washington, D.C., A COMMON RULE OF THUMB IS THAT THE AVERAGE AMERICAN AUTOMOBILE TRAVELS 10,000 MILES PER YEAR. HOWEVER, AS TABLE 1.59 INDICATES, THE ESTIMATES OF ANNUAL VMT VARY SIGNIFICANTLY. Source "Annual Miles of Automobile Travel," Report No. 1973 and 1974 Surveys of Purchases and Ownership, Selected Highway Statistics, 1974, Federal Comprehensive Human Resources Data System Study of Automobile Dynamics, Arthur D. Little, The Study of America Markets: Automobile Markets, U.S. News and World Report, 1976. 16,828 E 1974 S 1976 THE CURVE BELOW ILLUSTRATES THE POTENTIAL RATE OF MARKET PENETRATION FOR NEWLY INTRODUCED VEHICLES. THIS CURVE WAS GENERATED USING THE FOLLOWING ASSUMPTIONS: NEW VEHICLES ACCOUNT FOR 10% OF SALES IN FIRST YEAR INTRODUCED 20% OF SALES IN SECOND YEAR INTRODUCED 100% OF SALES IN TENTH YEAR INTRODUCED ONE-YEAR-OLD VEHICLES DRIVE 17.1% OF VMT THE FIGURES FOR AVERAGE AND MEDIAN ANNUAL-MILES DRIVEN BY ALL CARS INCLUDES MILEAGE FOR AUTOS THAT HAVE Table 1.60 Distribution of Annual-Miles Driven per Automobile, 1976 Note: The sample for this mail study was selected on a national cross-sectional basis from lists maintained by The Reuben H. Donnelley Corporation, with heavy oversampling in the higher income households which control most of the buying activity in selective consumer markets. The findings are based on returns from 11,707 household heads and are projectable to the approximately 65 million households on the Donnelley lists. Source: The Study of American Markets: Automotive Market, U.S. News and World Report, 1977, p. 68. |