Freight Facts and Figures 2010
Tables 2-5 and 2-5M. Hazardous Materials Shipments by Hazard Class: 2007
Flammable liquids, especially gasoline, are the predominant hazardous material transported in the United States. In terms of ton miles, flammable liquids account for about 56 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 17 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 | 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: February 2010), table 1a, available at www.bts.gov/publications/commodity_flow_survey/ as of May 25, 2010.
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 | 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: February 2010), table 1a, available at www.bts.gov/publications/commodity_flow_survey/ as of May 25, 2010.
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