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This report presents data from the 1997 Commodity Flow Survey (CFS) on hazardous material shipment characteristics. The U.S. Department of Transportation defines hazardous materials as belonging to one of nine hazard classes: explosives, gases, flammable liquids, flammable solids, oxidizers and organic peroxides, toxic materials and infectious substances, radioactive materials, corrosive materials, and miscellaneous dangerous goods. This revised Hazardous Materials report contains ten new tables in addition to those in the initial publication released in January 2000. The additional tables in the revised report include sorts of CFS data by special groupings, Standard Classification of Transported Goods (SCTG) codes, and a breakout of interstate versus intrastate truck shipments.
The Bureau of Transportation Statistics and the U.S. Census Bureau cosponsored the 1993 and 1997 CFS. The CFS reports the value, weight, mode, and distance transported for commodities shipped by manufacturing, mining, wholesale trade, and selected retail and service industries. The CFS covers both local and intercity freight movements, including exports but not imports; identifies parcel, postal, and courier as a separate mode of transportation; includes freight movement between coastal ports; and estimates freight carried by intermodal combinations of carriers. The CFS also reports commodities that are hazardous materials and those shipments that were exports.
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