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September 2008 Traffic Volume Trends

  • Travel on all roads and streets changed by -4.4% (-10.7 billion vehicle miles)
    for September 2008 as compared with September 2007.
  • Travel for the month is estimated to be 232.8 billion vehicle miles.
  • Cumulative Travel for 2008 changed by -3.5% (-79.2 billion vehicle miles).
  • Cumulative estimate for the year is 2,177.0 billion vehicle miles of travel.

Click here for lists of state by region

  • Estimated Vehicle-Miles of Travel by Region - September 2008 - (in Billions)
  • Change in Traffic as compared to same month last year.
Region Total Travel Percentage Change
North-East 37.3 -3.4
South-Atlantic 48.2 -5.7
North-Central 53.4 -4.0
South-Gulf 45.0 -5.2
West 49.0 -3.6


  • All data for this month are preliminary. Revised values for the previous monthare shown in Tables 1 and 2.
  • All vehicle-miles of travel computed with 2006 Table VM-2 as a base.
  • Compiled with data on hand as of November 03, 2008.
  • Some historical data were revised based on HPMS and amended TVT data as of September 2008
  • For information on total licensed drivers in the U.S. visit Select the year of interest then Section III (Driver Licensing).
  • For information on total registered motor vehicles in the U.S., visit Select the year of interest and Section II (Motor Vehicles).
  1. Travel Trends (September 2008)
  2. Individual Monthly Motor Vehicle Travel in the U.S. for September 2008
  3. Changes on Rural Arterial Roads by Region and State
  4. Changes on Urban Arterial Roads by Region and State
  5. Changes on All Estimated Roads by Region and State
  6. Volume Trends - Rural
  7. Volume Trends - Urban
  8. Figure 1 - Moving 12-Month Total on All Highways
  9. Figure 2 - Travel on U.S. Highways By Month

United States Department of Transportation - Federal Highway Administration