|Mode||MSA >1million||Standard error||MSA
|Standard error||Non-MSA||Standard error||Total||Standard error|
NOTE: Only trips in which the transportation mode and MSA characteristics could be identified are included.
NOTE: Column totals may not add to 100 percent due to rounding.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Federal Highway Administration, National Household Travel Survey, long distance file, 2001, (Washington, DC)