Q. National Household Travel Survey
Does the USDOT have any sources on travel behavior?
The best resource of the USDOT for travel behavior is the NHTS:
The National Household Travel Survey is the primary source of information about how people across the Nation travel. The U.S. Department of Transportation collects this information for Congress, national, state and local policymakers and transportation planners to study daily travel in the United States.
You access the NHTS at: http://nhts.ornl.gov/
The collection of most frequently used data tables is posted at::http://nhts.ornl.gov/tables09/FatCat.aspx