TABLE 1-21b  Highway Vehicle-Miles of Travel by Vehicle Type: 1993–2003,,,,,,,,,,,,,
"Millions of miles
",,,,,,,,,,,,,
,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,,
"Highway, total","2,296,378","2,357,588","2,422,696","2,485,848","2,561,695","2,631,522","2,691,056","2,746,925","2,797,287","2,855,508","2,890,893",,
Passenger vehicles,"2,136,490","2,187,372","2,244,540","2,302,877","2,370,218","2,435,142","2,488,368","2,541,405","2,588,255","2,640,905","2,675,009",,
Passenger car,"1,374,709","1,406,089","1,438,294","1,469,854","1,502,556","1,549,577","1,569,100","1,600,287","1,628,332","1,658,474","1,660,828",,
Light trucks,"745,750","764,634","790,029","816,540","850,739","868,275","901,022","923,059","943,207","966,034","998,004",,
Bus,"6,125","6,409","6,420","6,563","6,842","7,007","7,662","7,590","7,077","6,845","6,638",,
Motorcycle,"9,906","10,240","9,797","9,920","10,081","10,283","10,584","10,469","9,639","9,552","9,539",,
Freight vehicles,"159,888","170,216","178,156","182,971","191,477","196,380","202,688","205,520","209,032","214,603","215,884",,
"Truck, single-unit, 2-axle, 6-tire or more","56,772","61,284","62,705","64,072","66,893","68,021","70,304","70,500","72,448","75,866","77,562",,
"Truck, combination","103,116","108,932","115,451","118,899","124,584","128,359","132,384","135,020","136,584","138,737","138,322",,
"
NOTES: Light trucks include sport utility vehicles, minivans, and pickup trucks.  Data may not be consistent with other sources, particularly data that are revised on an irregular or frequent basis.",,,,,,,,,,,,,
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SOURCES: 1993–1994—U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA), Highway Statistics Summary to 1995 (Washington, DC: 1997), table VM-201A. 1995–2003—USDOT, FHWA, Highway Statistics (Washington, DC: Annual issues), table VM-1.",,,,,,,,,,,,,
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