The data on vehicles available were obtained from answers to long-form questionnaire Item 43, which was asked on a sample basis at occupied housing units. These data show the number of passenger cars, vans, and pickup or panel trucks of 1-ton capacity or less kept at home and available for the use of household members. Vehicles rented or leased for 1 month or more, company vehicles, and police and government vehicles are included if kept at home and used for nonbusiness purposes. Dismantled or immobile vehicles are excluded. Vehicles kept at home but used only for business purposes also are excluded.
Aggregate vehicles available
To calculate aggregate vehicles available, a value of "7" is assigned to vehicles available for occupied units falling within the terminal category, "6 or more." (For more information on aggregates, see "Derived Measures".)
Vehicles per household (Mean vehicles available)
Vehicles per household is computed by dividing aggregate vehicles available by the number of occupied housing units. Vehicles per household is rounded to the nearest tenth. (For more information on means, see Derived Measures.)
The statistics do not measure the number of vehicles privately owned or the number of households owning vehicles.
Data on automobiles available were collected from 1960 to 1980. In 1980, a separate question also was asked on the number of trucks and vans. The data on automobiles and trucks and vans were presented separately and also as a combined vehicles-available tabulation. The 1990 and Census 2000 data are comparable to the 1980 vehicles-available tabulations. In 1990, the terminal category identified "7 or more"; this was changed to "6 or more" in Census 2000.