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July 2012 Traffic Volume Trends

Travel Trends (July 2012)

Based on preliminary reports from the State Highway Agencies, travel during July 2012 on all roads and streets in the nation changed by -0.3% (-0.8 billion vehicle miles) resulting in estimated travel for the month at 258.3** billion vehicle-miles.

This total includes 90.2 billion vehicle-miles on rural roads and 168.1 billion vehicle-miles on urban roads and streets.

Cumulative Travel changed by 0.9% (14.8 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 1987 are also included.

Travel in Millions of Vehicle Miles All Roads and Streets
Year July Year to Date Moving 12-Month
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 245,140 1,593,494 2,736,255
2001 250,363 1,614,880 2,768,312
2002 256,392 1,652,755 2,833,486
2003 262,105 1,665,799 2,868,554
2004 265,969 1,719,117 2,943,540
2005 267,025 1,741,605 2,987,277
2006 263,442 1,751,981 2,999,806
2007 267,179 1,765,795 3,028,185
2008 262,152 1,740,862 3,006,191
2009 265,026 1,724,091 2,959,757
2010 265,820 1,720,150 2,952,821
2011 259,051 1,699,174 2,945,509
2012 258,277 1,713,998 2,945,478

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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