A. The registration and fee requirements apply to any person who offers for transportation, or transports, in foreign, interstate or intrastate commerce:

• A highway route-controlled quantity of a Class 7 (radioactive) material;
• More than 25 kg (55 pounds) of a Division 1.1, 1.2, or 1.3 (explosive) material in a motor vehicle, rail car or freight container;
• More than 1 L (1.06 quarts) per package of a material extremely toxic by inhalation ( i.e., “material poisonous by inhalation,” that meets the criteria for “hazard zone A,);
• A shipment of a quantity of hazardous materials in a bulk packaging having a capacity equal to or greater than 13,248 L (3,500 gallons) for liquids or gases or more than 13.24 cubic meters (468 cubic feet) for solids;
• A shipment in other than a bulk packaging of 2,268 kg (5,000 pounds) gross weight or more of one class of hazardous materials for which placarding of a vehicle, rail car, or freight container is required for that class, under the provisions of subpart F of part 172; or,
• A quantity of hazardous material that requires placarding under provisions of subpart F of part 172 of this chapter.

See § 107.601. Exceptions from the registration requirements are in §§ 107.601(b) and 107.606.

A. Generally, both. In accordance with § 107.601, a person who offers or transports hazardous materials in the amounts listed must register. The term “person who offers” is defined in 171.8. Hazmat registration required by PHMSA is different from the registration for new US DOT numbers and operating authority required by the Federal Motor Carrier Safety Administration (FMCSA). Additional information on registration for a new US DOT number and operating authority for highway carriers is available at FMCSA’s registration and licensing Web site.

A. No, you do not need to de-register or otherwise contact the DOT if you no longer are subject the registration requirements. You may simply let the registration lapse.

Additional information regarding the registration program, including the registration form and brochure, is available at the following Web site:

http://hazmat.dot.gov/regs/register/register.htm