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Weight of U.S. Exports to and Imports from Canada and Mexico by Transportation Mode
(Millions of short tons)
The U.S. Department of Transportation, Bureau of Transportation Statistics estimated the weight of exports for truck, rail, pipeline, and other modes using value to weight ratios derived from imported commodities.
Component numbers may not add to totals due to rounding.
a Other includes "flyaway aircraft" or aircraft moving under their own power (i.e., aircraft moving from the manufacturer to a customer and not carrying any freight), powerhouse (electricity), vessels moving under their own power, pedestrians carrying freight, mode unknown, mail, imports into Foreign Trade Zones (FTZs), and miscellaneous. Although FTZs are treated as a mode of transportation in the Transborder Freight Data, the actual mode for a specific shipment into or out of an FTZ is unknown because U.S. Customs does not collect this information.
U.S. Department of Transportation, Bureau of Transportation Statistics, Transborder Freight Data, available at https://www.bts.gov/transborder as of Apr.11, 2019.