HAZMAT CDL Practice Test

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Get ready for the HAZMAT CDL Test with our quiz, featuring multiple-choice questions, flashcards, and detailed explanations to help you understand key concepts. Master the material and pass your exam with confidence!

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What action should be taken for a cargo tank that is not empty according to regulation?

It can be moved with open valves only
It should be left unattended
It must not be moved with open valves
It can be moved without additional paperwork

The correct answer is: It must not be moved with open valves

Cargo tanks that are not empty are subject to specific regulations to ensure safety during transport. According to these regulations, a cargo tank with residual hazardous materials must not be moved with open valves. This requirement is in place to prevent leaks or spills that could pose serious safety hazards to the environment and human health. Keeping valves closed when the tank is not completely empty helps ensure that any potentially hazardous substances remain contained within the tank during transport. Moving a tank with open valves risks accidental release of the cargo, which could lead to contamination and dangerous situations. Thus, the regulation emphasizes the importance of maintaining closed valves for safety when the tank is not fully emptied. Failure to adhere to this regulation could have significant legal and safety implications for the driver and the transporting company.