|All 50 states||70.5||88.5||42.0||92.8|
|Mainland states only||70.1||89.0||42.1||92.8|
NOTE: There is no bus or rail service in Hawaii. Ferry data is shown only for Alaska as it respresents only 0.1% coverage nationally.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics' April 2005 analysis of the U.S. scheduled intercity transportation network.