Figure 1,,,,,,
"Modal Shares of U.S. Commerical Freight Shipment by Value, Tons, and Ton-Miles: 1997",,,,,,


,Percent,,,,,
Mode,Value,Tons,Ton-miles,,,
Truck (private and for-hire),62.3,59.7,28.8,,,
"Parcel, postal and courier",10.0,0.2,0.5,,,
Water,8.9,15.0,18.9,,,
Air (including truck and air),7.6,0.1,0.2,,,
Rail (includes truck and rail),5.1,11.3,29.4,,,
Pipeline,2.7,9.8,17.0,,,
Other and unknown,3.4,3.9,5.3,,,

"SOURCES: U.S. Department of Transportation, Bureau of Transportation ",,,,,,
"Statistics and U.S. Department of Commerce, U.S. Census Bureau,    ",,,,,,
"1997 Commodity Flow Survey, United States, EC97TCF-US "
"(Washington, DC: 1999); and Oak Ridge National Laboratory data.  "