Table 11,,,,,,,
"Fuel Efficiency of Combination Trucks, 1980–2002",,,,,,,
Year,Registrations (thousands),Vehicle Travel (million miles),Fuel Use (million gallons),Fuel Efficiency (miles per gallon) [(2)/(3)],,,
,       '(1),        '(2),        '(3),          '(4),,,
1980,"1,417","68,678","13,037",5.3,,,
1981,"1,261","69,134","13,509",5.1,,,
1982,"1,265","70,765","13,583",5.2,,,
1983,"1,304","73,586","13,796",5.3,,,
1984,"1,340","77,377","14,188",5.5,,,
1985,"1,403","78,063","14,005",5.6,,,
1986,"1,408","81,038","14,475",5.6,,,
1987,"1,530","85,495","14,990",5.7,,,
1988,"1,667","88,551","15,224",5.8,,,
1989,"1,707","91,879","15,733",5.8,,,
1990,"1,709","94,341","16,133",5.8,,,
1991,"1,691","96,645","16,809",5.7,,,
1992,"1,675","99,510","17,216",5.8,,
1993,"1,680","103,116","17,748",5.8,,
1994,"1,681","108,932","18,653",5.8,,
1995,"1,696","115,451","19,777",5.8,,
1996,"1,747","118,899","20,192",5.9,,
1997,"1,790","124,584","20,302",6.1,,
1998,"1,831","128,159","21,100",6.1,,
1999,"2,029","132,384","24,537",5.4,,
2000,"2,097","135,020","25,666",5.3,,
2001,"2,154","136,584","25,512",5.4,,
2002,"2,277","138,643","26,451",5.2,,
Growth Rates - Average Annual Percentage Rates,,,,,,
1987-2002,2.7,3.3,3.9,-0.6,,
1987-1995,1.3,3.8,3.5,0.2,,
1995-2001,4.1,2.8,4.3,-1.2,,
2001-2002,5.7,1.5,3.7,-3.7,,
"Source: U. S. Department of Transportation, Federal Highway Administration, Highway Statistics 2002, Washington, DC, 2003, Table VM1 and annual. (Additional  resources:  www.fhwa.dot.gov)",,,,
Note: The Federal Highway Administration changed the combination truck travel methodology in 1993. Combination trucks include all trucks designed to be used in combination with one or more trailers.  The average vehicle travel of these trucks (on a per truck basis) far surpasses the travel of other trucks due to long-haul freight movement.,,,,
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