WV CDL PRACTICE TEST - GENERAL KNOWLEDGE
31.
Air tank drains:
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should not be used in wet weather.
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are used to remove water and oil from the air tanks.
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are used to move air to the brakes.
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protect the tanks and the rest of the system from too much pressure.
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32.
A red triangle with an orange center means:
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Liquid tanker
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The vehicle is hauling hazardous materials
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Slow-moving vehicle
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Law enforcement vehicle
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33.
Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
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Rain
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Traffic
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The weight of a cargo
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Repaving of the road
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34.
What should you do if your vehicle starts hydroplaning?
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Leave the road completely.
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Release the accelerator and push in the clutch to let the wheels turn freely.
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Apply the brakes and countersteer to regain control of the vehicle.
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Accelerate slightly, then push in the clutch to slow down.
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35.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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left; left
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left; right
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right; right
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right; left
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36.
Use your four-way emergency flashers:
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when stopping at railroad highway crossings.
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to warn drivers behind you that people are working on the road.
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when parked at the side of the road.
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All of the above.
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37.
To control your speed on a downgrade, you should:
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coast in neutral.
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use engine braking.
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fully apply the brakes.
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use controlled braking.
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38.
Without engine oil:
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the ABS won't work.
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the engine can be destroyed rapidly.
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traction will be reduced.
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exhaust emissions will be reduced.
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39.
Before entering an intersection, make sure that:
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there's enough room to get at least halfway across.
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there is sufficient space to clear it.
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accelerate smoothly and change gears as necessary.
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That there is enough room for the rear of your vehicle to clear the stop line on your side.
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40.
Before transporting sealed loads, you should check that:
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the load can be inspected.
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the load is properly secured.
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the seal numbers match the placard numbers.
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All of the above.
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