Trade using surface transportation between the United States and its North American neighbours, Canada and Mexico, was 11.6% higher in December 2011 than in December 2010, totalling $74.2 billion, according to the Bureau of Transportation Statistics (BTS) of the U.S. Department of Transportation. BTS reported that the December 2011 value of U.S. surface transportation trade with Canada and Mexico, rose 27.0% in the past two years from December 2009, and 40.3% from December 2008. Surface transportation includes freight movements by truck, rail, pipeline, mail, Foreign Trade Zones, and other.
In December, 85.5% of U.S. trade by value with Canada and Mexico moved via land, 10.0% moved by vessel, and 4.5% moved by air. The value of U.S. surface transportation trade with Canada and Mexico decreased 3.2% in December 2011 from November 2011. Month-to-month changes can be affected by seasonal variations and other factors.
U.S.-Canada and U.S.-Mexico surface transportation trade both increased compared to December 2010 with U.S.-Canada reaching $44.2 billion, an 11.2% increase, and U.S.-Mexico reaching $30.0 billion, a 12.1% increase. In December trade by state, Michigan led all states in surface trade with Canada as it has in previous years, at $5.6 billion, a 19.7% increase from December 2010.