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UPGRADE TO CDL PREMIUM
1.
When parked on the side of the road, you should:
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flash your brake lights.
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turn off all lights.
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use the 4-way emergency flashers.
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2.
You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
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apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
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apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
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increase your speed to approximately 45 mph, and then apply release the brakes.
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3.
Empty trucks:
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require shorter stopping distances than fully-loaded trucks.
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have better traction than fully-loaded trucks.
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may have poor traction.
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4.
For a cargo fire in a box trailer, you should:
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keep the doors shut.
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wait 10 minutes before opening the doors.
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open the doors immediately and use the fire extinguisher.
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5.
If the safety relief valve in the air brake system releases air:
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the valve is fully operational.
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something is wrong.
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this will supply more power to the brakes.
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6.
Which of the following is a good way to avoid becoming an aggressive driver?
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Keep your following distance reasonable.
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Be realistic about your travel time.
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All of the above.
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7.
You should do an after-trip inspection:
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once a month.
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at least once a week.
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after each trip.
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8.
When the spring brakes are on, you should:
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pump the brakes.
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press the accelerator.
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not push the brake pedal down.
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9.
When driving a double or triple, you should:
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decrease your following distance.
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increase your following distance.
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drive in the left lane whenever possible.
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10.
Most heavy-duty vehicles use:
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hydraulic brakes.
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air brakes.
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solid brakes.
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