| Percent | SE | |
|---|---|---|
| Drivers | 88 | 0.18 |
| 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.