[Estimates are based on data from the 2002 and 1997 Commodity Flow Surveys. Because of rounding, estimates may not be additive]
|SCTG Code 1||Commodity Description||Value (percent)||Tons (percent)||Ton-miles (percent)|
|17||Gasoline and aviation turbine fuel||42.3||41.4||48.5||48.9||35.9||34.6|
|19||Coal and petroleum products, n.e.c.||6.3||6.1||9.1||8.8||12.5||10.0|
|23||Chemical products and preparations, n.e.c.||8.0||7.0||1.6||1.1||4.4||2.9|
|–||All other SCTG codes||12.1||11.0||2.0||1.7||5.5||4.3|
– Represents an estimate equal to zero or less than 1 unit of measure.
S Estimate does not meet publication standards because of highly sampling variability or poor response quality.
1 SCTG codes were selected based on estimated tons without regard to sampling variability.
NOTE: Percentages represent the proportion of hazardous materials to the two digit commodity total.
SOURCE: Bureau of Transportation Statistics (USDOT) and U.S. Census Bureau, 2002 Commodity Flow Survey, Hazmat Data, December 2004.