Source: 1977 Motorcycle Market Study conducted by J. D. Power and Associates, Los Angeles, Calif., 1977. Source: Engineering and Right-of-Way in Progress 1,541 Miles Under Adequate Toll Present Traffic Minor Improvement is Complete or Essentially Complete TOTAL 2,265 Mile,728 Miles Required or Underway 26.195 Miles The National System of Interstate and Defense Highways. (June 13, 1978) U.S. Department of Transportation, Federal Highway Administration, Department of Transportation News, FHWA 11-78 (June 13, 1978), Washington, D.C. Table 1.55 Highway Motor Vehicle Travel in the United States, 1950 through 1976 (106 vehicle-miles) "For a detailed discussion of VMT see TERA, Inc., and D. L. Greene, VMT Statistics, Lifetime VMT and Current State Methods of Estimating VMT, ORNL/TM-6327, Oak Ridge National Laboratory, Oak Ridge, Tenn. b Estimated VMT for registered motorcycles only. See Table 1.72 for discussion of motorcycle data. NA Not available. Source: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1965, Washington, D.C., THE SPLIT BETWEEN URBAN AND RURAL TRAVEL VARIES BY TYPE OF MOTOR VEHICLE. OVER 80% OF VMTS TRAVELED BY COMBINATION TRUCKS IS ON RURAL ROADS. Table 1.56 Motor Vehicle Travel on Urban and Rural Roads, 1976 (percent) 53.5 19.1 46.9 55.2 b. Highway categories for 1976 are based on functional classification and differ from earlier years. Compared to the earlier Source: D.C., March 29, 1978, Table VM-1. |