|Used public transit in last 2 months||17||0.23|
|Biked in the last week||8||0.18|
|Have travel-affecting medical condition||9||0.14|
|Are somewhat to severely concerned about highway congestion||50||0.35|
NOTES: Percents do not
total 100% since categories are not mutually exclusive.
SE = standard error.
SOURCE: The 2001 National Household Travel Survey, person file, U.S. Department of Transportation.