CDL Hazardous Materials Endorsement (HME)Hazardous Materials RegulationsMedium
A driver is transporting a shipment of Division 2.1 (Flammable Gas) and Division 2.2 (Non-Flammable Gas) in cylinders. What is the maximum number of cylinders that can be transported without requiring placards, assuming each cylinder weighs 100 pounds?
- A1 cylinder
- B20 cylinders
- C10 cylinders
- D5 cylinders
Show answer & explanationAnswer & explanation
Correct answer: C. 10 cylinders
Placards are required for Table 2 materials when the aggregate gross weight of all hazardous materials in the vehicle is 1,001 pounds or more. Since Division 2.1 and 2.2 are Table 2 materials, 10 cylinders weighing 100 pounds each totals 1,000 pounds, which is below the placarding threshold. 11 cylinders would exceed this.
Why the other options are wrong
- A. This amount (100 lbs) is well below the placarding threshold.
- B. This amount (2,000 lbs) would definitely require placarding.
- D. This amount (500 lbs) is well below the placarding threshold.
Placarding Threshold (Table 2)
For hazardous materials listed in Table 2 of the placarding regulations, placards are generally required on a transport vehicle or bulk packaging when the aggregate gross weight of all hazardous materials on the vehicle is 1,001 pounds or more.
- Applies to specific hazard classes (Table 2 materials).
- Calculated by aggregate gross weight.
- Threshold is 1,001 pounds.
Memory trick: Weigh the goods, if over a thousand, placard you must!