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Passenger Car Occupant Safety Data
Vehicle-miles in this table and in table 2-23 are taken from NHTSA revised data and are not based exclusively on USDOT, Federal Highway Administration (FHWA) data. The change was made to reflect the different vehicle classification schemes used by FHWA and NHTSA. Thus, Vehicle-miles for passenger cars, and light and large trucks in this table and table 2-23 should not be compared with Vehicle-miles in chapter 1, which are taken directly from FHWA. Rates per 100 million vehicle-miles figures may differ from those in the source data due to rounding by the source. Vehicles involved in crashes figures in this table are not comparable to figures in previous editions due to a change in the source.
In 2011, the Federal Highway Administration implemented an enhanced methodology for estimating registered vehicles and vehicle miles traveledby vehicle type. These revisions were applied to data from 2007 and later. In some cases the changes were significant and should be taken into account whencomparing registered vehicle counts and/or vehicle miles traveled for 2006 and earlier years with the numbers for 2007 and later years. Due to an enhancementin the passenger vehicle registration data provided by R.L. Polk & Co. for 2011 and later, registration counts for those years changed considerably from thecounts provided for 2010 and earlier years. This should be taken into account when comparing registration numbers and rates per registered vehicle forpassenger cars for 2010 and earlier years with those for 2011 and later years.
The Injured persons and Vehicles involved counts are estimates and have been rounded to the nearest 1,000.
KEY: N = data do not exist; R = revised.
U.S. Department of Transportation, National Highway Traffic Safety Administration, personal communications, Oct. 16, 2018, Nov. 6, 2019, May 12, 2020, and Jan. 12, 2021.