Appendix 1 - Weight of U.S. Merchandise Shipments with Canada and Mexico by Mode of Transportation: 2005

Appendix 1 - Weight of U.S. Merchandise Shipments with Canada and Mexico by Mode of Transportation: 2005

(Thousands of short tons)

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  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.