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April 2010 Traffic Volume Trends

Travel Trends (April 2010)

Based on preliminary reports from the State Highway Agencies, travel during April 2010 on all roads and streets in the nation changed by 1.2 percent (3.1 billion vehicle miles) resulting in estimated travel for the month at 255.9** billion vehicle-miles.

This total includes 85.6 billion vehicle-miles on rural roads and 170.3 billion vehicle-miles on urban roads and streets.

Cumulative Travel changed by -0.2 percent (-1.6 billion vehicle miles).

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. Similar totals for each year since 1985 are also included.

Travel in Millions of Vehicle Miles All Roads and Streets
Year April Year to Date Moving 12-Month
1985 147,635 535,547 1,733,671
1986 150,277 557,984 1,797,200
1987 159,801 593,289 1,873,545
1988 166,804 625,267 1,956,306
1989 174,320 655,793 2,056,112
1990 179,033 674,963 2,126,210
1991 179,538 669,854 2,142,392
1992 186,069 697,702 2,200,062
1993 188,737 711,130 2,260,579
1994 195,407 727,355 2,312,930
1995 198,213 764,330 2,394,562
1996 205,253 769,452 2,427,897
1997 211,290 797,319 2,510,068
1998 217,921 816,180 2,579,234
1999 220,996 826,825 2,636,008
2000 227,698 862,890 2,715,524
2001 232,510 875,656 2,759,690
2002 237,209 896,701 2,816,593
2003 239,376 898,185 2,856,746
2004 250,737 937,551 2,929,041
2005 250,664 947,225 2,973,842
2006 250,474 960,487 3,002,656
2007 252,398 964,103 3,017,952
2008 252,220 958,799 3,024,487
2009 252,857 947,381 2,962,053
2010 255,942 945,820 2,977,760

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 theses estimates. The highway Performance Monitoring System provides more accurate information on an anual basis.

** System entries may not add up to the give "All Systems" total due to rounding on pages 2 to 8.

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Steven Jessberger
Office of Highway Policy Information
202-366-5052
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United States Department of Transportation - Federal Highway Administration