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UPGRADE TO CDL PREMIUM
1.
Most heavy-duty vehicles use:
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solid brakes.
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air brakes.
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hydraulic brakes.
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2.
Truck tractors with air brakes built after March 1, 1997, are required to be equipped with:
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hydraulic brakes.
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a rear backup camera.
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anti-lock brakes.
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3.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
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slow down and test your brakes.
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pull off the road and stop immediately.
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activate your hazard lights and drive to the nearest place where you can stop.
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4.
Dollies with ABS are required to have a malfunction lamp:
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on the rear.
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on the right side.
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on the left side.
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5.
Hanging meat in a refrigerated truck:
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will not affect safe driving ability.
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can be a very unstable load.
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should never be transported.
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6.
Air pressure should build up in a single air system, within about:
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3 minutes.
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15 minutes.
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10 minutes.
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7.
If you're feeling tired while driving you should:
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eat something.
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drink coffee.
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stop driving and get some rest.
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8.
Having ABS on only the trailer:
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makes the trailer more likely to swing out.
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still gives you more control over your vehicle during braking.
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is very dangerous.
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9.
Which of the following statements about retarders is NOT correct?
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Retarders help you avoid skids.
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Retarders help slow a vehicle, reducing the need for using brakes.
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You should turn the retarder off whenever the road is wet, icy, or snow covered.
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10.
When you discover a fire, if the trailer doors are hot you should not open them because:
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with air many fires do less damage.
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opening the doors lets air in and may make the fire flare up.
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the temperature of the trailer should not be changed in any way.
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