Q
423. You are required to stop at a railroad grade crossing when:
General Knowledgemedium
Aa. You are transporting hazardous materials.
Bb. The cargo makes a stop mandatory under state or federal regulations.
Cc. The crossing gates are up.
Detailed Explanation
The correct answer is "b. The cargo makes a stop mandatory under state or federal regulations.". This is based on federal CDL regulations and safety standards.
Correct Answer: b. The cargo makes a stop mandatory under state or federal regulations.
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