For international transportation (anywhere outside the U.S.) the answer is yes; the CLASS 9 placard must be used if the applicable placarding threshold is met.  For domestic transportation, including international transportation that occurs within the US, the answer is no; the CLASS 9 placard is not required pursuant to a placarding exception found at 49 CFR 172.504(f)(9).

This is true even if the CLASS 9 hazardous material…

• Is in a bulk packaging, or;
• The aggregate weight of Table 2 hazardous materials on the vehicle (including CLASS 9) is ≥1,001 pounds.
  

  The Class 9 Placard is not required within the U.S.

But we’ve all seen the CLASS 9 placard in use on the highways, so what gives?  While not required, the CLASS 9 placard is allowed for domestic transportation if desired by the Carrier.  It is frequently seen when used to mark bulk packagings of >1,000 gallons (including motor vehicles) on all four sides with the identification number.  If this is the case, a CLASS 9 placard would be seen with the four digit identification number displayed across its middle.

You may think the placarding of a truck hauling HazMat is the concern of the driver, but it is your responsibility as the Shipper to offer placards to the driver of your hazardous materials shipment.

There’s even more to learn about the transportation of hazardous materials, and I can help.  Contact me for a free consultation.