Table 2-6 Hazardous Materials Shipments by Hazard Class: 2012
Hazard class | Description | Value | Tons | Ton-miles1 | Miles | |||
---|---|---|---|---|---|---|---|---|
$ Billions | Percent | Millions | Percent | Billions | Percent | Average distance per shipment | ||
Class 1 | Explosives | 18.4 | 0.8 | 4.0 | 0.2 | 1.0 | 0.3 | 840 |
Class 2 | Gases | 125.1 | 5.4 | 164.8 | 6.4 | 33.2 | 10.8 | 57 |
Class 3 | Flammable liquids | 2,016.7 | 86.4 | 2,203.5 | 85.4 | 204.6 | 66.5 | 93 |
Class 4 | Flammable solids | 5.4 | 0.2 | 11.3 | 0.4 | 5.8 | 1.9 | 565 |
Class 5 | Oxidizers and organic peroxides | 7.6 | 0.3 | 12.0 | 0.5 | 5.5 | 1.8 | 437 |
Class 6 | Toxic (poison) | 15.2 | 0.7 | 7.6 | 0.3 | 3.6 | 1.2 | 513 |
Class 7 | Radioactive materials | 12.3 | 0.5 | S | S | 0.4 | Z | 34 |
Class 8 | Corrosive materials | 75.9 | 3.2 | 125.3 | 4.9 | 37.8 | 12.3 | 264 |
Class 9 | Miscellaneous dangerous goods | 58.0 | 2.5 | 51.0 | 2.0 | 16.1 | 5.2 | 530 |
Total | 2,334.4 | 100.0 | 2,580.2 | 100.0 | 307.5 | 100.0 | 114 |
KEY: S = data are not published because of high sampling variability or other reasons; Z = rounds to zero.
1 Ton-miles estimates are based on estimated distances traveled along a modeled transportation network.
NOTES: Value-of-shipments estimates have not been adjusted for price changes. Numbers and percents may not add to totals due to rounding.
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics and U.S. Department of Commerce, Census Bureau, 2012 Commodity Flow Survey, Hazardous Materials (Washington, DC: February 2015), table 2a, available at www.census.gov/econ/cfs/2012/ec12tcf-us-hm.pdf as of July 2015.