Table 3-2 Hazardous Materials Shipments by Hazard Class: 2007

Excel

Hazard Class Description Value Tons Ton-miles
Billions of 2007 U.S. Dollars Percent Millions Percent Billions Percent
Class 1 Explosives 12 0.8 3 0.1 <1 <0.1
Class 2 Gases 132 9.1 251 11.2 55 17.1
Class 3 Flammable liquids 1,170 80.8 1,753 78.6 182 56.1
Class 4 Flammable solids 4 0.3 20 0.9 6 1.7
Class 5 Oxidizers and organic peroxides 7 0.5 15 0.7 7 2.2
Class 6 Toxic (poison) 21 1.5 11 0.5 6 1.8
Class 7 Radioactive materials 21 1.4 <1 <0.1 <1 <0.1
Class 8 Corrosive materials 51 3.6 114 5.1 44 13.7
Class 9 Miscellaneous dangerous goods 30 7.1 7.1 7.1 7.1 7.1
Total 1,448 100.0 2,231 100.0 323 100.0

NOTE: Numbers and percents may not add to totals due to rounding.

SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics and U.S. Department of Commerce, Census Bureau, 2007 Commodity Flow Survey, Hazardous Materials, table 1a (Washington, DC: February 2010), available at www.bts.gov/publications/commodity_flow_survey/ as of August 2011.