"This review provides guidance on the Department of Transportation (DOT) Hazardous Materials Regulations (HMR) contained in Title 49, Code of Federal Regulations (49 CFR) Parts 171-185, which govern the packaging and shipment of radioactive material. These materials have an excellent safety record when packaged, labeled, marked and transported in accordance with these regulations. This review serves as a reference document and is not an official interpretation or restatement of the regulations. This review of the radioactive material regulations was designed as a guidance document and should not be used without simultaneous reference to all applicable and current regulations pertaining to the transportation of radioactive material."
United States. Pipeline and Hazardous Materials Safety Administration: http://phmsa.dot.gov/