Q
400. When you are parked at the side of the road at night, you must:
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Aa. Turn off all your vehicle lights to save power.
Bb. Use your high beams to warn other drivers.
Cc. Turn on your emergency flashers to warn others.
Detailed Explanation
The correct answer is "c. Turn on your emergency flashers to warn others.". This is based on federal CDL regulations and safety standards.
Correct Answer: c. Turn on your emergency flashers to warn others.
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