Figure 2-3 - Freight Shipments and Related Factor of Growth 1993-97
Figure 2-3 - Freight Shipments and Related Factor of Growth 1993-97

SOURCES: Freight data based on: U.S. Department of Commerce, Census Bureau, 1993 Commodity Flow Survey: United States, TC92-CF-52 (Washington, DC: 1993)
_________. 1997 Commodity Flow Survey: United States Preliminary, EC97TCF-US(P) (Washington, DC: 1999).
Preliminary Oak Ridge National Laboratory estimates prepared for the Bureau of Transportation Statistics, 1999.
Other data from U.S. Department of Commerce, Census Bureau, Statistical Abstract of the United States: 1998 (Washington, DC: 1998).