Freight Facts and Figures 2008
Tables 2-5 and 2-5M. Hazardous Materials Shipments by Hazard Class: 2002
Flammable liquids, especially gasoline, are the predominant hazardous material transported in the United States. In terms of ton miles, flammable liquids account for about 67 percent of total ton-miles of hazardous materials shipments. The next largest class of hazardous materials in terms of ton miles is gases at about 11 percent.
Table 2-5 (standard units)
| Hazard Class | Description | Value $ Billions |
Value Percent |
Tons Millions |
Tons Percent |
Ton miles Billions |
Ton miles Percent |
|---|---|---|---|---|---|---|---|
| Class 1 | Explosives | 7.9 | 1.2 | 5.0 | 0.2 | 1.6 | 0.5 |
| Class 2 | Gases | 73.9 | 11.2 | 213.4 | 9.7 | 37.3 | 11.4 |
| Class 3 | Flammable liquids | 490.2 | 74.3 | 1,789.0 | 81.6 | 218.6 | 66.9 |
| Class 4 | Flammable solids | 6.6 | 1.0 | 11.3 | 0.5 | 4.4 | 1.3 |
| Class 5 | Oxidizers and organic peroxides | 5.5 | 0.8 | 12.7 | 0.6 | 4.2 | 1.3 |
| Class 6 | Toxic (poison) | 8.3 | 1.3 | 8.5 | 0.4 | 4.3 | 1.3 |
| Class 7 | Radioactive materials | 5.9 | 0.9 | 0.1 | 0.003 | 0.04 | 0.01 |
| Class 8 | Corrosive materials | 38.3 | 5.8 | 90.7 | 4.1 | 36.3 | 11.1 |
| Class 9 | Miscellaneous dangerous goods | 23.6 | 3.6 | 61.0 | 2.8 | 20.2 | 6.2 |
| Total | 660.2 | 100.0 | 2,191.5 | 100.0 | 326.7 | 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, 2002 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 2004), table 2a, available at www.bts.gov/publications/commodity_flow_survey/2002/hazardous_materials/ as of September 23, 2008.
Table 2-5M (metric units)
| Hazard Class | Description | Value $ Billions |
Value Percent |
Metric tonnes Millions |
Metric tonnes Percent |
Tonne kilometers Billions |
Tonne kilometers Percent |
|---|---|---|---|---|---|---|---|
| Class 1 | Explosives | 7.9 | 1.197 | 4.5 | 0.228 | 2.3 | 0.480 |
| Class 2 | Gases | 73.9 | 11.199 | 193.6 | 9.736 | 54.4 | 11.405 |
| Class 3 | Flammable liquids | 490.2 | 74.258 | 1,622.9 | 81.632 | 319.1 | 66.898 |
| Class 4 | Flammable solids | 6.6 | 0.995 | 10.3 | 0.516 | 6.4 | 1.344 |
| Class 5 | Oxidizers and organic peroxides | 5.5 | 0.829 | 11.5 | 0.578 | 6.2 | 1.292 |
| Class 6 | Toxics | 8.3 | 1.253 | 7.7 | 0.386 | 6.2 | 1.302 |
| Class 7 | Radioactive materials | 5.9 | 0.886 | 0.1 | 0.003 | 0.1 | 0.013 |
| Class 8 | Corrosive materials | 38.3 | 5.805 | 82.3 | 4.137 | 52.9 | 11.098 |
| Class 9 | Miscellaneous dangerous goods | 23.6 | 3.579 | 55.4 | 2.784 | 29.4 | 6.168 |
| Total |  |
660.2 | 100.0 | 1,988.1 | 100.0 | 477.0 | 100.0 |
Note:
1 metric tonne = 1.1 short tons; 1 tonne kilometer = 0.7 ton-miles. Number 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, 2002 Commodity Flow Survey, Hazardous Materials (Washington, DC: December 2004), table 2a, available at www.bts.gov/publications/commodity_flow_survey/2002/hazardous_materials/ as of September 23, 2008.
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