Appendix 1,,,
Weight of U.S. Merchandise Shipments with Canada and Mexico by Mode of Transportation: 2005,,,
(Thousands of short tons),,,
,Total,Exports1,Imports
ALL MODES,"678,841","210,958","467,883"
Canada,"449,609","135,269","314,340"
Mexico,"229,232","75,689","153,543"
Vessel,"255,874","64,311","191,563"
Canada,"118,340","39,191","79,150"
Mexico,"137,534","25,120","112,414"
Truck1,"190,797","88,865","101,932"
Canada,"133,494","61,696","71,798"
Mexico,"57,303","27,169","30,134"
Rail1,"140,966","47,513","93,453"
Canada,"107,909","25,348","82,561"
Mexico,"33,057","22,165","10,892"
Pipeline1,"85,604","4,858","80,746",,,
Canada,"84,706","3,960","80,746",,,
Mexico,899,899,0,,,
Air,421,274,146,,,
Canada,289,214,75,,,
Mexico,131,60,71,,,
All other land modes1,"5,179","5,137",42,,,
Canada,"4,872","4,862",10,,,
Mexico,307,275,32,,,
1 Weights of export shipments by land modes are not collected in the administrative records that provide official U.S. trade data. The Bureau of Transportation Statistics has estimated the land mode export tonnage using value-to-weight ratios derived from imported commodities.  Value-to-weight ratios for exported commodities may differ from imported commodities.,,,,,,
"NOTE: ""All other land modes"" includes shipments made by mail, foreign trade zones, other, and unknown modes of transportation.",,,,,,
"SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Transborder Freight Data, as of April 2006. ",,,,,,
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