4-9 U.S. Merchandise Trade with Canada and Mexico by Mode Share: 2009
4-9 U.S. Merchandise Trade with Canada and Mexico by Mode Share: 2009
| Mode | Value (percent) | Weight (percent) | 
|---|---|---|
| NAFTA trade, total | 100.0 | 100.0 | 
| Trucka | 61.9 | 27.8 | 
| Raila | 13.0 | 19.4 | 
| Pipelinea | 6.7 | 17.7 | 
| Air | 5.3 | 0.1 | 
| Water | 8.1 | 34.0 | 
| Other and unknowna | 5.0 | 1.0 | 
| U.S.-NAFTA imports, total | 100.0 | 100.0 | 
| Truck | 55.5 | 20.4 | 
| Rail | 15.0 | 16.5 | 
| Pipeline | 11.4 | 25.7 | 
| Air | 4.1 | 0.0 | 
| Water | 10.8 | 37.3 | 
| Other and unknown | 3.2 | 0.1 | 
| U.S.-NAFTA exports, total | 100.0 | 100.0 | 
| Trucka | 69.5 | 42.6 | 
| Raila | 10.6 | 25.3 | 
| Pipelinea | 1.0 | 1.8 | 
| Air | 6.9 | 0.1 | 
| Water | 4.7 | 27.4 | 
| Other and unknowna | 7.3 | 2.8 | 
a Because export weights for surface modes are not currently reported, BTS estimated the export weight for truck, rail, pipeline, and other and unknown based on value-to-weight ratios from the import data.
Note: U.S. North American Free Trade Agreement (NAFTA) refers to U.S. trade with Canada and Mexico.
Sources: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Transborder Freight Data, special calculation available at http://www.bts.gov/programs/international/transborder/ as of November 2010.