CDL Hazardous Materials Endorsement (HME)Communication RulesMedium
A driver is preparing to transport 2,500 pounds of UN1203, Gasoline, Packing Group II, Class 3. The shipment consists of non-bulk packages. What is the minimum aggregate gross weight threshold that requires the vehicle to be placarded for this material?
- A1,001 pounds
- B500 pounds
- C3,000 pounds
- D2,000 pounds
Show answer & explanationAnswer & explanation
Correct answer: A. 1,001 pounds
For most hazardous materials, including Class 3 Flammable Liquids in non-bulk packages, a vehicle must be placarded if the aggregate gross weight of all hazardous materials requiring placards is 1,001 pounds or more. Since 2,500 pounds exceeds this threshold, placarding is required.
Why the other options are wrong
- B. 500 pounds is not the general threshold for placarding non-bulk shipments.
- C. 3,000 pounds is above the 1,001-pound threshold, but not the minimum.
- D. 2,000 pounds is above the 1,001-pound threshold, but not the minimum.
General Placarding Threshold
The minimum aggregate gross weight of hazardous materials (1,001 pounds) that requires a vehicle to be placarded, with exceptions for certain materials like Class 1 and 2.3.
- Applies to most hazard classes in non-bulk packages.
- Aggregate gross weight calculation.
- Some materials (e.g., Table 1) always require placards regardless of weight.
Memory trick: A Thousand and One reasons to placard!