Table A-2,, "Mean Number of Drivers, Vehicles, and Bicycles per Household",, ,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.",, ,, ,,