These numbers exclude pipelines and air freight. Pipelines are not generally in direct competition with railroads, nor is air freight. Air freight accounts for a very small proportion of freight tonnage and ton-miles. Ton-mile data are from Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics 2004 (January 2005), Table 1-46. Tonnage data are from Rosalyn A. Wilson, Transportation in America, 19th ed. (Washington, D.C.: Eno Transportation Foundation, 2002), p. 44.
TANKCARS???AMTRAK EXPRESS/GREYHOUND EXPRESS?