NOTES: Includes passenger cars, light trucks and motorcycles for year 1965. The definition of light-duty vehicle was changed after 2006, affecting the vehicle types included in the personal vehicle category.
SOURCE: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics (multiple years), Table VM-1, available at http://www.fhwa.dot.gov/policyinformation/statistics.cfm as of April 2016.
Updated: Saturday, May 20, 2017