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Figure 8. Vehicle-Miles of Travel and Lane-Miles: 1980-2000
Year Total VMT (Million) Index Truck VMT (million) Index Lane-Mile Index
1980 1,527,295 100.00 108,491 100.00 7,922,174 100.00
1981 1,555,308 101.83 108,702 100.19 7,856,560 99.17
1982 1,595,010 104.43 111,423 102.70 8,012,913 101.15
1983 1,652,788 108.22 116,132 107.04 8,055,068 101.68
1984 1,720,269 112.64 121,796 112.26 8,076,149 101.94
1985 1,774,826 116.21 123,504 113.84 8,017,994 101.21
1986 1,834,872 120.14 126,675 116.76 8,048,512 101.59
1987 1,921,204 125.79 133,517 123.07 8,051,015 101.63
1988 2,025,962 132.65 137,985 127.19 8,048,008 101.59
1989 2,096,487 137.27 142,749 131.58 8,062,952 101.78
1990 2,144,362 140.40 146,242 134.80 8,051,081 101.63
1991 2,172,050 142.22 149,542 137.84 8,087,793 102.09
1992 2,247,151 147.13 153,384 141.38 8,124,090 102.55
1993 2,296,378 150.36 159,888 147.37 8,132,196 102.65
1994 2,357,588 154.36 170,216 156.89 8,143,014 102.79
1995 2,422,696 158.63 178,156 164.21 8,158,253 102.98
1996 2,485,848 162.76 182,971 168.65 8,178,654 103.24
1997 2,561,695 167.73 191,477 176.49 8,242,437 104.04
1998 2,631,522 172.30 196,380 181.01 8,160,858 103.01
1999 2,691,056 176.20 202,688 186.82 8,177,983 103.23
2000 2,749,803 180.04 205,791 189.68 8,223,393 103.80
Source: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Various years).            

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