Table 4. U.S. Merchandise Trade with Canada by Surface Modes of Transportation,,,,,,
(millions of dollars),,,,,,
Mode,,September 2006,August 2007,September 2007,Percent Change     Aug. 2007-Sept. 2007,Percent Change September 2006-2007
All Surface Modes,Imports,"22,916","24,029","23,300",-3.0,1.7
,Exports,"17,488","19,049","19,354",1.6,10.7
,Total,"40,404","43,078","42,654",-1.0,5.6
Truck,Imports,"12,674","12,255","12,610",2.9,-0.5
,Exports,"13,789","14,809","14,961",1.0,8.5
Rail,Imports,"4,832","5,801","5,702",-1.7,18.0
,Exports,"1,885","2,019","2,278",12.8,20.9
Pipeline,Imports,"4,180","4,722","4,113",-12.9,-1.6
,Exports,140,139,325,134.0,132.6
"Source: BTS TransBorder Freight Data, http://www.bts.gov/transborder/",,,,,,
"Note: Numbers may not add to totals due to rounding.  The value of trade for all surface modes is not equal to the sum of truck, rail and pipeline modes, it also includes shipments made by mail, foreign trade zones, other and unknown modes of transportation.  For additional detail refer to the “Data Fields” Section of the TransBorder web page: http://www.bts.gov/transborder/TBDR_DataFields.html.",,,,,,