CDL Hazardous Materials Endorsement (HME)Hazardous Materials RegulationsEasy
A driver is transporting a load of hazardous materials that includes a Division 2.3 (Poisonous Gas) material. Which of the following statements about the driver's responsibilities for this material is true?
- AThe driver is exempt from segregation rules when transporting Division 2.3 materials.
- BThe driver is required to wear a full-face respirator during all driving operations.
- CThe driver must carry a self-contained breathing apparatus (SCBA) at all times.
- DThe driver must ensure the vehicle is placarded with a 'POISON GAS' placard.
Show answer & explanationAnswer & explanation
Correct answer: D. The driver must ensure the vehicle is placarded with a 'POISON GAS' placard.
Division 2.3 (Poisonous Gas) is a Table 1 material, meaning it requires placarding regardless of the quantity offered for transportation. The 'POISON GAS' placard is specifically for this class.
Why the other options are wrong
- A. Division 2.3 materials have strict segregation requirements, especially from foodstuffs and other incompatible materials.
- B. Wearing a full-face respirator during all driving operations is not a general requirement for transporting Division 2.3 materials.
- C. While SCBA may be required for specific emergency response, it's not a general requirement for all drivers transporting 2.3 materials.
Placarding Table 1 Materials
Hazardous materials listed in Placarding Table 1 must be placarded when transported in any quantity (one or more packages) on a transport vehicle or freight container.
- Includes most dangerous hazard classes (e.g., Explosives, Poison Gas, Radioactive).
- No quantity threshold; always placard.
- Specific placard for each material.
Memory trick: Table 1 materials are always 'hot', so placard them on the spot!