CDL Hazardous Materials Endorsement (HME)Hazardous Materials RegulationsMedium
A driver is transporting a shipment of UN1210, Printing ink, Class 3 (Flammable Liquid), Packing Group II, in a cargo tank. What is the driver's primary responsibility regarding the emergency discharge control system for this vehicle?
- ATo have a certified mechanic inspect the system every 30 days.
- BTo ensure the system is locked and tagged out during transit.
- CTo test the system daily before beginning the route.
- DTo ensure the system is operational and that they know how to use it.
Show answer & explanationAnswer & explanation
Correct answer: D. To ensure the system is operational and that they know how to use it.
For cargo tanks transporting certain hazardous materials, including flammable liquids, the driver is primarily responsible for ensuring that the emergency discharge control system is operational before and during transit, and that they are fully familiar with its proper use to prevent or mitigate spills.
Why the other options are wrong
- A. Incorrect. While inspection is required, it's typically part of periodic maintenance and not a specific daily driver responsibility.
- B. Incorrect. Locking and tagging out is usually for maintenance, not normal transit, and would prevent emergency use.
- C. Incorrect. Daily testing is not a federal requirement for emergency discharge control systems; pre-trip checks are more general.
Emergency Discharge Control System (Driver Responsibility)
Drivers operating cargo tanks equipped with emergency discharge control systems for hazardous materials must ensure the system is operational and be fully trained in its proper use to prevent or control spills.
- Applies to specific cargo tanks (e.g., flammable liquids).
- Driver must verify operational status.
- Driver must know how to use the system.
Memory trick: Emergency controls: Know it, Check it, Use it.