|How Informed||Estimate (percent)||Standard Error (percent)||Sample Size|
|Well or somewhat well informed||85.8||2.5||263|
|Not very well or not informed||14.3||2.5||38|
KEY: NA = Not applicable
NOTES: Percentages may not sum to 100 percent due to independent rounding. All estimates are weighted to represent U.S. noninstitutionalized adult population (18 and older).
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Omnibus Household Survey, December 2004.