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Freight Facts and Figures 2009Tables 2-4 and 2-4M. Hazardous Materials Shipments by Transportation Mode: 2002Trucks move more than one-half of all hazardous materials shipped from within the United States. However, truck ton miles of hazardous shipments account for a much smaller share, about one-third of all ton miles, because such shipments travel relatively short distances. By contrast, rail accounts for only 5 percent of shipments by weight but 22 percent of ton miles. Table 2-4 (standard units)
Key: S = data are not published because of high sampling variability or other reasons. 1Truck as a single mode includes shipments that went by private truck only, for-hire truck only, or a combination of both. 2Private truck refers to a truck operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment. 3Excludes crude oil shipments. Note: Numbers and percents may not add to totals due to rounding. Source: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, Census Bureau, 2002 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 2004), table 1a, available at www.bts.gov/publications/commodity_flow_survey/2002/united_states/ as of March 30, 2009.
Table 2-4M (metric units)
Key: S = data are not published because of high sampling variability or other reasons. 1Truck as a single mode includes shipments that went by private truck only, for-hire truck only, or a combination of both. 2Private truck refers to a truck operated by a temporary or permanent employee of an establishment or the buyer/receiver of the shipment. 3Excludes crude oil shipments. Note: 1 metric tonne = 1.1023 short tons; 1 tonne kilometer = 0.6849 ton miles. Numbers and percents may not add to totals due to rounding. Source: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, Census Bureau, 2002 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 2004), table 1a, available at www.bts.gov/publications/commodity_flow_survey/2002/united_states/ as of April 13, 2009.
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