Freight Facts and Figures 2012
Tables 2-6 and 2-6M. Hazardous Materials Shipments by Hazard Class: 2007
Flammable liquids, especially gasoline, are the predominant hazardous materials transported in the United States. In terms of ton miles, flammable liquids account for about 56 percent of hazardous materials shipments. The next largest class of hazardous materials, in terms of ton miles, is gases at about 17 percent.
Table 2-6 (standard units)
| Hazard Class | Description | Value |
Tons | Ton miles | |||
|---|---|---|---|---|---|---|---|
| $ Billions | 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 | Toxics (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 | 2.1 | 63 | 2.8 | 23 | 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 (Washington, DC: July 2010), table 1a, available at www.bts.gov/publications/commodity_flow_survey/ as of August 5, 2012.
Table 2-6M (metric units)
| Hazard Class | Description | Value |
Metric tonnes | Tonne kilometers | |||
|---|---|---|---|---|---|---|---|
| $ Billions | Percent | Millions | Percent | Billions | Percent | ||
| Class 1 | Explosives | 12 | 0.8 | 3 | 0.1 | <1 | <0.1 |
| Class 2 | Gases | 132 | 9.1 | 206 | 11.2 | 118 | 17.1 |
| Class 3 | Flammable liquids | 1,170 | 80.8 | 1,443 | 78.6 | 387 | 56.3 |
| Class 4 | Flammable solids | 4 | 0.3 | 17 | 0.9 | 12 | 1.7 |
| Class 5 | Oxidizers and organic peroxides | 7 | 0.5 | 12 | 0.7 | 15 | 2.2 |
| Class 6 | Toxics (poison) | 21 | 1.5 | 9 | 0.5 | 12 | 1.8 |
| Class 7 | Radioactive materials | 21 | 1.4 | <1 | <0.1 | <1 | <0.1 |
| Class 8 | Corrosive materials | 51 | 3.6 | 94 | 5.1 | 95 | 13.8 |
| Class 9 | Miscellaneous dangerous goods | 30 | 2.1 | 52 | 2.8 | 49 | 7.1 |
| Total | |
1,448 | 100.0 | 1,836 | 100.0 | 688 | 100.0 |
Notes:
1 metric tonne = 1.1023 short tons; 1 tonne kilometer = 0.6849 ton miles. 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 (Washington, DC: July 2010), table 1a, available at www.bts.gov/publications/commodity_flow_survey/ as of August 5, 2012.
You may need the Microsoft Excel Viewer to view Excel files on this page.
