CDL Hazardous Materials Endorsement (HME)Hazardous Materials RegulationsEasy
A driver is transporting a bulk quantity of UN1789, Hydrochloric acid, Class 8 (Corrosive), Packing Group II, in a cargo tank. The driver needs to determine the appropriate placard for the vehicle. Which of the following placards must be displayed?
- AFLAMMABLE
- BCORROSIVE
- CPOISON
- DDANGEROUS
Show answer & explanationAnswer & explanation
Correct answer: B. CORROSIVE
For bulk quantities of a single hazardous material from Table 1, the specific placard for its hazard class must be displayed. Hydrochloric acid is a Class 8 (Corrosive) material, so the 'CORROSIVE' placard is required.
Why the other options are wrong
- A. Incorrect. This material is not flammable.
- C. Incorrect. This material is not primarily a poison gas or poisonous material in this context.
- D. Incorrect. The 'DANGEROUS' placard is typically used for mixed loads of Table 2 materials below the 1,001 lb threshold for specific placards, or when specific placards are not required for individual Table 2 materials.
Bulk Placarding (Table 1 Material)
For bulk shipments (e.g., cargo tanks, portable tanks, or freight containers with a capacity of 640 cubic feet or more) of a single hazardous material listed in Table 1, the vehicle must display the specific placard for that material's hazard class.
- Applies to bulk quantities.
- For Table 1 hazardous materials.
- Specific hazard class placard required.
Memory trick: Placards tell the tale: What's inside, what's its peril.