|Paid workers||Volunteer workers|
|Days travelling to work per week (mean)||4.8 days||2.1 days|
|Modes used during week (percent)|
|Carpool or vanpool||5.9%||5.3%|
NOTE: Mode totals exceed 100 percent because respondents were able to indicate multiple transportation modes used for travel to work during the survey week.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Omnibus Household Survey, October 2005.