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Placarding

Placarding covers when a vehicle carrying hazardous materials must display placards and what they must show, drawn from 49 CFR 172.504, 172.505(a), 172.514(b), and 177.823(a).

Practice Placarding

5 Questions

  1. Hazard classes that appear in the second of the two placard tables generally need placards only once the load passes a weight figure. What is that figure, and what does the exception leave untouched?
  2. When may a DANGEROUS placard stand in for the separate placards a mixed load would otherwise need, and what cancels the substitution?
  3. A load includes a poisonous material described on the shipping paper as a poison inhalation hazard, in a quantity comfortably under the second table's weight figure. What placarding does federal regulation call for?
  4. A bulk packaging that had to be placarded has now been emptied of its hazardous cargo. When may the placards come off?
  5. You find that your vehicle is not placarded the way the regulations require for the hazardous material on board. When may it be moved anyway?