HMT - Column 3

Column 3, Hazard Class or Division, contains either the designation of the hazard class or division for each hazardous material or the word "Forbidden." If "Forbidden" appears in column 3, the material may not be transported by any mode. The "Forbidden" restriction does not apply if the material has been diluted, stabilized, or incorporated into a device and then reclassified according to the hazard class definitions. This is a special provision, and is not a blanket exception unless indicated in the federal regulations. A description of each hazard class and division will be covered in the next section of this course.

There are special provisions where the Forbidden restriction does not apply. These provisions are listed in 49 CFR 172.101(d)(1). The DOT may also grant a special permit to allow the shipment of forbidden materials.

To learn more about DOT HAZMAT Awareness visit our DOT HAZMAT General Awareness Online Training web page.