
Note: For 1975, 1980, and 1985, there may be some overlap in fatality numbers between various modes. The overlaps may affect 1 percent of data and would not impact the shape of the graphic. 1998 numbers are based on preliminary BTS estimates.
Sources: Various sources as cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics 1999 (Washington, DC: April 1999).