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Traffic Volume Trends - October 2005

Based on preliminary reports from the State Highway Agencies, travel during October 2005 on all roads and streets in the nation changed by -1.6 percent resulting in estimated travel for the month at 249.7** billion vehicle-miles.

This total includes 92.6 billion vehicle-miles on rural roads and 157.1 billion vehicle-miles on urban roads and streets.

Cumulative Travel changed by +0.1 percent.

Note: Annual travel has been adjusted to match the Highway Performance Monitoring System for 2003. While the adjustment to total travel was less than one percent, rural travel declined 5% and urban travel increased 4% because of this adjustment. The larger changes to rural and urban travel are primarily because of the expansion in urban boundaries reflected in the 2000 census. Travel estimates for 2004 and beyond will also reflect this adjustment.

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.

Travel in Millions of Vehicle Miles
All Roads and Streets

Year October Year to Date Moving 12-Month
1980 132,615 1,272,638 1,519,245
1981 133,216 1,301,044 1,549,262
1982 138,780 1,338,281 1,587,506
1983 144,044 1,385,632 1,639,831
1984 147,610 1,443,403 1,706,878
1985 154,587 1,492,306 1,765,674
1986 159,434 1,540,799 1,823,255
1987 166,836 1,613,072 1,910,513
1988 175,478 1,697,830 2,009,086
1989 182,583 1,769,776 2,097,531
1990 182,634 1,807,316 2,144,580
1991 188,445 1,829,739 2,169,924
1992 194,836 1,888,773 2,231,248
1993 197,793 1,927,555 2,285,934
1994 202,864 1,974,427 2,343,576
1995 206,745 2,035,303 2,418,464
1996 215,654 2,081,096 2,468,568
1997 221,219 2,150,629 2,551,735
1998 228,523 2,197,882 2,607,626
1999 233,631 2,236,138 2,663,619
2000 236,554 2,305,690 2,749,010
2001 241,162 2,335,446 2,776,682
2002 245,646 2,390,651 2,850,815
2003 254,425 2,418,184 2,883,040
2004 253,706 2,476,248 2,948,514
2005 249,720 2,479,636 2,965,879

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.

** System entries may not add to give "All Systems" total due to rounding for Page 2 to 8.

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