NOTES: Drove alone includes people who usually drove alone to work as well as people who were driven to work by someone who then drove back home or to a non-work destination. Public transportation refers to bus, streetcar, subway, railroad, and elevated trains for 2000. Other include ferryboats, surface trains, and van service and other means not classified for years 2000.
SOURCE: 2000: U.S. Department of Commerce (USDOC), Census Bureau (CB), Decennial Census. About Commuting (Journey to Work). Available at http://www.census.gov/ as of June 2015. 2014: USDOC/CB as cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, Table 1-41. Available at http://www.bts.gov as of April 2016.