• The Class 9 Miscellaneous placard is not required to be displayed on a bulk packaging (e.g., a portable tank or tote bin) or a transport vehicle within the U.S.
• The Class 9 placard may be displayed if desired by the carrier.  All regulations pertaining to the display of placards then apply.
• If the Class 9 Placard is not displayed on a bulk packaging, the packaging must then display the required Class 9 Miscellaneous label.
• The 4-digit identification number of a HazMat must be displayed on a bulk packaging (e.g. portable tank or tote bin) of a hazardous material.
• If the identification number on a bulk packaging in or on a vehicle or freight container is not visible during transportation (e.g. the tote bin is inside the cargo hold of the vehicle) the identification number must be displayed on all four sides of the vehicle or freight container.
• Many times the HazMat’s identification number is displayed on the Class 9 placard, though it is not required to be.  It may also be displayed on an orange panel or on a white square-on-point.  Any of the following is an acceptable display of the identification number for a Class 9 Miscellaneous HazMat.

  

  White Square-on-Point

  

  

  Placard

  
  

I hope this helps.  Please contact me with any other questions.

Conclusion:

The job of a driver transporting hazardous materials on a public roadway is not easy.  Regulations like this can make it even harder.  Make sure you – or your drivers if you represent the motor carrier – are trained and knowledgeable in the regulations of USDOT/PHMSA for the transport of hazardous materials.