Office of Highway Policy Information, Federal Highway Administration. Automobiles (Registered Vehicles): Total Automobiles Registered | State: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, 2008 - 2012. Data-Planet™ Statistical Datasets by Conquest Systems, Inc. Dataset-ID: 013-003-003
Dataset: Vehicle registrations, for all automobiles.
State automobile registration data reported to FHwA and published as part of the annual Highway Statistics Series. The vehicle registration date varies among the states. Although many states continue to register specific vehicle types on a calendar year basis, all states use some form of the "staggered" system to register motor vehicles. The "staggered" system permits a distribution of the renewal workload throughout all months. Most states allow pre-registration or permit "grace periods" to better distribute the annual registration workload. In order to present vehicle registration data uniformly for all states, the information is shown as nearly as possible on a calendar-year basis. Insofar as possible, the registrations reported exclude transfers and re-registrations and any other factors that could otherwise result in duplication in the vehicle counts.
http://www.fhwa.dot.gov/policy/ohpi/qfvehicles.cfm
Category: Transportation and Traffic
Subject: Motor Vehicle Registrations, Ownership, Automobiles, Automobile Registrations
Source: Federal Highway Administration
The Federal Highway Administration (FHwA) was established as an agency of the Department of Transportation by the Department of Transportation Act. It administers DOT's highway transportation programs.
http://www.fhwa.dot.gov/