TABLE 1-33M:  Roadway Vehicle-Kilometers Traveled (VKT) and VKT per Lane-Kilometers by Functional Class,,,,,,,,,,,,,,,,,,,
,1980,1985,1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2005,2006
"Urban VKT, total (millions)","1,376,416","1,680,313","2,052,693","2,073,635","2,193,623","2,268,647","2,332,337","2,397,173","2,452,457","2,499,240","2,567,901","2,619,397","2,677,583","2,697,870","2,780,296","2,905,683","3,045,305","3,141,230","3,181,749"
Interstate,"259,494","347,921","448,848","459,186","488,058","510,804","532,012","549,636","565,812","581,670","602,896","616,796","633,221","643,561","657,607","696,255","731,262","754,895","768,113"
Other arterialsa,"779,227","930,635","1,125,306","1,138,640","1,199,956","1,245,597","1,284,094","1,311,889","1,343,196","1,362,514","1,388,857","1,413,250","1,449,040","1,470,499","1,508,530","1,567,398","1,641,674","1,686,945","1,706,062"
Collector,"133,645","144,162","171,068","172,652","186,789","189,721","193,263","204,272","208,104","209,450","212,281","211,794","217,860","221,964","228,324","247,438","260,888","270,431","278,754"
Local,"204,050","257,595","307,470","303,157","318,821","322,525","322,968","331,375","335,345","345,607","363,868","377,557","377,462","361,847","385,835","394,592","411,482","428,959","428,819"
"Rural VKT, total (millions)","1,081,527","1,175,993","1,398,324","1,421,941","1,422,816","1,427,015","1,461,833","1,501,983","1,545,282","1,608,180","1,661,693","1,710,126","1,743,164","1,778,459","1,815,598","1,746,758","1,722,397","1,670,398","1,669,001"
Interstate,"217,397","248,414","322,147","329,933","330,812","335,239","346,923","359,498","374,277","386,653","404,782","418,697","431,594","440,999","450,555","434,434","429,688","416,482","415,071"
Other arterialsa,"422,894","455,127","532,477","538,736","553,714","562,574","575,065","593,196","609,695","630,955","649,345","665,174","676,888","687,101","698,141","670,446","659,741","642,019","634,885"
Collectorb,"304,919","332,602","386,983","395,303","378,051","364,188","371,000","380,043","387,900","408,934","414,998","425,596","430,067","436,071","442,581","424,323","419,928","404,890","404,549"
Local,"136,318","139,850","156,716","157,968","160,239","165,014","168,844","169,245","173,410","181,639","192,568","200,659","204,615","214,287","224,320","217,554","213,040","207,007","214,497"
"Urban VKT per lane-kilometer, total (thousands)",987,"1,089","1,229","1,233","1,247","1,259","1,278","1,304","1,320","1,327","1,358","1,382","1,398","1,372","1,386","1,378","1,385","1,388","1,378"
Interstate,"5,355","6,072","7,215","7,310","7,255","7,384","7,511","7,699","7,881","8,050","8,258","8,415","8,567","8,643","8,756","8,748","8,818","8,779","8,734"
Other arterialsa,"2,335","2,504","2,818","2,829","2,869","2,861","2,902","2,943","2,988","3,004","3,059","3,138","3,176","3,214","3,259","3,237","3,249","3,220","3,201"
Collector,921,888,"1,020","1,044","1,061","1,056","1,054","1,104","1,113","1,109","1,132","1,137","1,155","1,171","1,196","1,193","1,199","1,199","1,236"
Local,235,271,295,288,291,288,286,291,292,296,309,318,315,291,302,295,295,300,295
"Rural VKT per lane-kilometer, total (thousands)",166,182,219,222,224,225,232,238,244,253,265,272,276,283,289,281,281,273,273
Interstate,"1,660","1,883","2,371","2,417","2,478","2,536","2,643","2,725","2,815","2,904","3,038","3,120","3,207","3,275","3,348","3,332","3,360","3,317","3,337"
Other arterialsa,834,892,"1,029","1,040","1,051","1,070","1,085","1,118","1,144","1,175","1,207","1,233","1,252","1,267","1,283","1,255","1,240","1,212","1,198"
Collectorb,213,227,264,269,262,254,259,268,274,288,293,301,304,308,314,306,304,295,296
Local,31,32,37,37,37,39,40,40,41,43,46,48,48,51,53,52,52,51,52
,,,,,,,,,,,,,,,,,,,
"a For urban: the sum of other freeways and expressways, other principal arterials, and minor arterials.",,,,,,,,,,,,,,,,,,,
  For rural: the sum of other principal arterials and minor arterials.,,,,,,,,,,,,,,,,,,,
b Collector is the sum of major and minor collectors (rural only).,,,,,,,,,,,,,,,,,,,
,,,,,,,,,,,,,,,,,,,
NOTE,,,,,,,,,,,,,,,,,,,
See table 1-6 for estimated highway lane-miles by functional class.,,,,,,,,,,,,,,,,,,,
1 Mile=1.609344 Kilometers,,,,,,,,,,,,,,,,,,,
SOURCES,,,,,,,,,,,,,,,,,,,
"1980-94: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995, FHWA-PL-97-009 (Washington, DC: July 1997), table VM-202. ",,,,,,,,,,,,,,,,,,,
"1995-2006: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table VM-2, Internet site www.fhwa.dot.gov/policy/ohpi as of Jan. 4, 2008.",,,,,,,,,,,,,,,,,
Lane-miles:,,,,,,,,,,,,,,,,,
"1980-95:  U.S. Department of Transportation, Federal Highway Administration, Office of Highway Information Management, unpublished data, 1997, table HM-260.",,,,,,,,,,,,,,,,,
"1996-2006:  U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (Washington, DC: Annual issues), table HM-60, Internet site www.fhwa.dot.gov/policy/ohpi as of Jan. 4, 2008.",,,,,,,,,,,,,,,,,