Travel in Millions of Vehicle Miles
Travel for the current month, the cumulative yearly total, as well as the moving 12-month total on all roads
and streets is shown below. Similar totals for each year since 1986 are also included.
Moving 12-Month
1986 171,114 1,051,927 1,808,832
1987 175,783 1,104,674 1,890,987
1988 184,779 1,166,778 1,986,431
1989 190,985 1,215,695 2,074,503
1990 195,470 1,249,210 2,140,555
1991 198,387 1,253,637 2,151,928
1992 206,616 1,298,275 2,216,853
1993 209,838 1,326,364 2,275,240
1994 214,778 1,356,007 2,326,348
1995 217,188 1,405,475 2,407,055
1996 225,109 1,428,788 2,446,088
1997 236,713 1,482,368 2,535,782
1998 239,944 1,512,756 2,590,760
1999 243,116 1,536,698 2,649,305
2000 245,190 1,593,847 2,736,608
2001 250,597 1,614,750 2,768,426
2002 256,436 1,652,060 2,832,921
2003 262,172 1,665,223 2,868,672
2004 265,939 1,716,778 2,941,777
2005 266,882 1,739,468 2,987,479
2006 263,287 1,749,744 2,999,707
2007 267,058 1,763,598 3,028,225
2008 261,987 1,738,725 3,006,251
2009 266,562 1,733,804 2,971,607
2010 268,542 1,736,726 2,980,517
2011 261,800 1,715,271 2,978,519
Traffic Volume Trends is a monthly report based on hourly traffic count data. These data, collected at
approximately 4,000 continuous traffic counting locations nationwide, are used to determine the percent
change in traffic for the current month compared to the same month in the previous year. This percent
change is applied to the travel for the same month of the previous year to obtain an estimate of travel for
the current month.Because of the limited sample sizes, caution should be used with these estimates. The
Highway Performance Monitoring System provides more accurate information on an annual basis.
** System
1,600
1,650
1,700
1,750
1,800
1,850
1,900
1,950
2,000
2,050
2,100
2,150
2,200
2,250
2,300
2,350
2,400
2,450
2,500
2,550
2,600
2,650
2,700
2,750
2,800
2,850
2,900
2,950
3,000
3,050
1986
1987
1988
1989
1991
1992
1993
1994
1996
1997
1998
1999
2001
2002
2003
2004
2006
2007
2008
2009
2011
Year
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