Details may not add to totals due to rounding or missing numbers that do not meet publication standards because of high sampling variability or poor response quality.
KEY: NEC = not elsewhere classified; SCTG = Standard Classification of Transportation Goods; S = data are not published because of high sampling variability or other reasons; U = data are not available.
a All data have been revised using data from the final release of the 2012 Commodity Flow Survey.
b Estimates exclude shipments of crude petroleum (SCTG 16).
c Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
d Prior to the 2012 CFS, oils and fats treated for use as biodiesel were included in Commodity Code 07. In the 2012 CFS, oils and fats treated for use as biodiesel moved to Commodity Code 18.
e Prior to the 2012 CFS, alcohols intended for use as fuel such as ethanol, although not specifically identified, were included in Commodity Code 08. In the 2012 CFS, ethanol moved to Commodity Code 17.
f Prior to the 2012 CFS, fuel alcohols such as ethanol were included in Commodity Code 08, although not specifically identified. Also, kerosene was included in Commodity Code 19. In the 2012 CFS, ethanol, fuel alcohols and kerosene moved to Commodity Code 17.
g Prior to the 2012 CFS, biodiesel, although not specifically identified, was included in Commodity Code 07. In the 2012 CFS, biodiesel moved to Commodity Code 18.
U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, Census Bureau, 2012 Commodity Flow Survey: United States, Final Release (Washington, DC: December 2014), CF1200A06, available at http://www.bts.gov/publications/commodity_flow_survey/ as of Dec. 9, 2014.
