Key: R = revised.
Notes: Air carrier data were smoothed using an exponential smoothing model, with a weight of 0.945 to reduce the year-to-year fluctuations. Air carrier fatalities resulting from the Sept. 11, 2001, terrorist attacks include only those persons onboard aircraft.
Sources: Passenger car occupants, Light-truck occupants, Large-truck occupants, and Motorcycle riders—U.S. Department of Transportation, National Highway Traffic Safety Administration, National Center for Statistics and Analysis, Traffic Safety Facts 2006, tables 7-10, available at http://www-nrd.nhtsa.dot.gov as of October 2008. Air carriers and General aviation—National Transportation Safety Board, Annual Review of Aircraft Accident Data— U.S. Air Carrier Operations, available at http://www.ntsb.gov/aviation/htm as of April 2008 as reported in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, tables 2-9 and 2-14, available at http://www.bts.gov/publications/national_transportation_statistics/ as of October 2008.