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March 2008 Traffic Volume Trends

  • Travel on all roads and streets changed by -4.3 percent for March 2008 as compared with March 2007.
  • Travel for the month is estimated to be 246.3 billion vehicle miles.
  • Cumulative Travel for 2008 changed by -2.3 percent.
  • Cumulative estimate for the year is 688.7 billion vehicle miles of travel.

Click here for lists of state by region

  • Estimated Vehicle-Miles of Travel by Region - March 2008 - (in Billions)
  • Change in Traffic as compared to same month last year.
RegionTotal TravelPercentage Change


  • All data for this month are preliminary. Revised values for the previous month are 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 May 12, 2008.
  1. Travel Trends (March 2008)
  2. Individual Monthly Motor Vehicle Travel in the U.S. for March 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