CDL Hazardous Materials Endorsement (HME)Communication RulesEasy
A driver is transporting a non-bulk shipment of UN1075, Liquefied Petroleum Gas, in cylinders. The total gross weight of the cylinders, including the gas, is 950 pounds. Which of the following placards is required on the vehicle?
- AFLAMMABLE
- BDANGEROUS
- CFLAMMABLE GAS
- DNON-FLAMMABLE GAS
Show answer & explanationAnswer & explanation
Correct answer: C. FLAMMABLE GAS
UN1075, Liquefied Petroleum Gas, is a Class 2.1 Flammable Gas. For non-bulk shipments exceeding 1,001 pounds aggregate gross weight, the FLAMMABLE GAS placard is required. Since the total weight is 950 pounds, a placard is still required because it's a Table 2 material and the quantity exceeds the 1,001-pound threshold for 'no placard if under 1001 lbs' for Table 2 materials.
Why the other options are wrong
- A. The 'FLAMMABLE' placard is for Class 3 Flammable Liquids, not flammable gases.
- B. The 'DANGEROUS' placard is used for mixed loads of hazardous materials that meet certain conditions, not for a single hazardous material like this.
- D. The 'NON-FLAMMABLE GAS' placard is for Class 2.2 non-flammable, non-poisonous gases.
Flammable Gas Placard
The FLAMMABLE GAS placard is required for vehicles transporting Class 2.1 Flammable Gases in quantities that meet or exceed specific placarding thresholds.
- Used for Class 2.1 hazardous materials.
- Required for bulk packaging and non-bulk over 1,001 lbs.
- UN1075 (LPG) is a common example.
Memory trick: Flammable Gas, a fiery blast, placard it fast, so danger won't last.