CDL Hazardous Materials Endorsement (HME)Hazardous Materials RegulationsEasy
A driver is transporting a shipment of UN1005, Anhydrous Ammonia, Class 2.2 (Non-Flammable Gas) in a cargo tank. According to federal regulations, what is the maximum amount of time the driver can leave this cargo tank unattended without complying with specific parking attendance requirements?
- A60 minutes
- B5 minutes
- C15 minutes
- D30 minutes
Show answer & explanationAnswer & explanation
Correct answer: B. 5 minutes
Federal regulations specify that a cargo tank containing UN1005, Anhydrous Ammonia, Class 2.2, cannot be left unattended for more than 5 minutes without meeting specific attendance requirements, such as being within clear view and having a clear path to the tank.
Why the other options are wrong
- A. Incorrect. 60 minutes is not the specified limit for this material and configuration.
- C. Incorrect. 15 minutes is not the specified limit for this material and configuration.
- D. Incorrect. 30 minutes is not the specified limit for this material and configuration.
Cargo Tank Unattended Time (Anhydrous Ammonia)
Federal regulations limit the time a driver can leave a cargo tank containing UN1005, Anhydrous Ammonia, unattended to a maximum of 5 minutes before specific parking attendance requirements must be met.
- Applies to UN1005 Anhydrous Ammonia.
- Cargo tank vehicles.
- Max 5 minutes unattended without specific attendance measures.
Memory trick: Five minutes, Anhydrous Ammonia, don't leave it!