If the word “Forbidden” appears in the Hazard class column of an entry in the hazardous materials table, ___________________.

Column 3: shows a material’s hazard class or division, or the entry “Forbidden.” Never transport a “Forbidden” material. Placard HazMat shipments are based on the quantity and hazard class. You can decide which placards to use if you know these 3 things:
Material’s hazard class.
Amount being shipped.
Amount of all HazMat of all classes on your vehicle.
[CDL DRIVER MANUAL FINAL]