(millions of metric tonnes)
|Air, air & truck||12||2||4||5||13||2||5||6||48||6||18||25|
|Multiple modes & mail1||1,296||393||353||550||1,410||417||507||486||3,243||586||1,403||1,255|
|Other & unknown||287||241||33||13||302||248||43||11||477||329||118||31|
12007 total and domestic numbers for the multiple modes & mail and the pipeline categories were revised as a result of Freight Analysis Framework database improvements.
2Data do not include imports and exports that pass through the United States from a foreign origin to a foreign destination by any mode.
NOTES: 1 metric tonne = 1.1023 short tons. Numbers may not add to totals due to rounding. The 2012 data are provisional estimates that are based on selected modal and economic trend data. All truck, rail, water, and pipeline movements that involve more than one mode, including exports and imports that change mode at international gateways, are included in multiple modes & mail to avoid double counting. As a consequence, rail and water totals in this table are less than other published sources.
SOURCE: U.S. Department of Transportation (USDOT), Bureau of Transportation Statistics, and USDOT, Federal Highway Administration, Office of Freight Management and Operations, Freight Analysis Framework, version 3.5, 2015.