Figure 3: Development of Truck Ton-Mile Estimates,,,,,,,,,,,,
,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001
Oak Ridge National Lab Estimate (bil)1,,,,909.614,,,,"1,109.00",,,,
Single Unit Truck VMT (bil)2,51.901,52.898,53.874,56.772,61.284,62.707,64.072,66.845,68.021,70.304,70.5,72.286
Combination Truck VMT (bil)2,94.341,96.645,99.51,103.116,108.932,115.455,118.899,124.5,128.359,132.384,135.02,135.4
Total Truck VMT (bil),146.242,149.543,153.384,159.888,170.216,178.162,182.971,191.345,196.38,202.688,205.52,207.686
"Truck VMT Index, 1993 Base",0.915,0.935,0.959,1,1.065,1.114,1.144,1.197,1.228,1.268,1.285,1.299
"Est. Truck Traffic, 1993 Base (bil ton-miles)",831.981,850.761,872.612,909.614,968.371,"1,013.58","1,040.94","1,088.58","1,117.22","1,153.11","1,169.22","1,181.54"
"Truck VMT Index, 1997 Base",0.764,0.782,0.802,0.836,0.89,0.931,0.956,1,1.026,1.059,1.074,1.085
"Est. Truck Traffic, 1997 Base (bil ton-miles)",847.591,866.723,888.985,926.681,986.54,"1,032.59","1,060.47","1,109.00","1,138.18","1,174.74","1,191.16","1,203.71"
"
Sources:",,,,,,,,,,,,
"1 BTS, Transporation Statistics Annual Report, 2000, p. 124. ",,,,,,,,,,,,
"2 FHWA, Highway Statistics, Table VM-1. ",,,,,,,,,,,,