| Mean | SE | |
|---|---|---|
| Drivers per household | 1.75 | 0.005 |
| Personal vehicles per household | 1.90 | 0.007 |
| Full-size bicycles per household | 0.86 | 0.009 |
NOTE: SE = standard error.
SOURCE: The 2001 National Household Travel Survey, household file, U.S. Department of Transportation.