Flashcard 7 - Hazardous Material Flashcard Set for the CDL

Yes, diamond shaped placards that indicate the hazardous class code of the cargo are required. Both sides, as well as the front and rear of the vehicle, must have identical placards. The placards must be readable from all four directions.

The placards are at least 9.84 inches (250 mm) square, square-on-point, in a diamond shape. Cargo tanks and other bulk packaging also display the ID number of their contents on placards, or orange panels or white square-on-point displays that are the same size as placards, and placed near the placards.