KEY: NHTS = National Household Travel Survey
NOTES: 1990 data have been adjusted to make them more comparable with later data in the series. 1995 “To or From Work” person trips and person miles are believed to be overstated (see Appendix 2 of the 1995 Summary of Travel Trends). Person trip is a trip by one person in any mode of transportation. Family/Personal Errands includes personal business, shopping, and medical/dental appointments. Other includes trips for work-related business.
SOURCE: U.S. Department of Transportation, Federal Highway Administration, 2009 National Household Travel Survey, Summary of Travel Trends. Table 11. Available at http://nhts.ornl.gov/ as of April 2016.