NOTES: These data reflect U.S. import and export trade with Canada and Mexico. Weights of export shipments by land modes are estimates from the Bureau of Transportation Statistics.
*"Nuclear reactors and parts" is a very small portion of trade under this commodity grouping (HS 84). The majority of trade for this commodity is computer-related machinery and parts.
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Transborder Freight Data, as of May 2005.