Ten U.S. states share a land border with Canada over which a great deal of commerce enters the United States by truck. The measurement presented here is the number of truckloads entering the United States from Canada in 2009. Michigan is the state through which the largest number of trucks cross the border.

Geographic reference: United States
Year: 2009
Market size: 5,021,000 crossings
Source: “Table 3-12: Incoming Truck Crossings, U.S. – Canadian Border: 2002–2009,” State Transportation Statistics 2009, page C-12.
Original source: Research and Innovation Technology Administration, Bureau of Transportation Statistics, U.S. Department of Transportation