ALASKA CDL PRACTICE TEST - GENERAL KNOWLEDGE
31.
In a vehicle with a dual air brake system:
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each system has its own air tanks.
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one system supplies air to the trailer.
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both systems typically operate the regular brakes on the rear axle.
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32.
Obstacles on the roadway that appear to the harmless:
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should be driven over.
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can be dangerous.
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never contain material capable of causing damage.
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33.
To make an emergency using the stab braking method, you should:
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fully apply the brakes until the wheels lock up, then stay off the brake until the vehicle has slowed down.
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apply the brakes as hard as you can without locking the wheels.
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apply your brakes all the way, release the brakes when the wheels lock up, and apply the brakes again as soon as the wheels start rolling.
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34.
Interstate commerce means trade, traffic, or transportation in the U.S. that is between:
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A place in a state and a place outside such state or outside the U.S.
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Two places in the state through another state or a place outside of the U.S.
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All of the above.
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35.
When driving, you should be alert for:
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drivers whose vision is blocked.
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people who are distracted.
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All of the above.
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36.
An item that is 15 feet long placed on a flatbed trailer should have at least:
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3 tie-downs.
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2 tie-downs.
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1 tie-down.
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37.
When backing, it is best to:
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use a helper whenever possible.
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use only the passenger's side mirror.
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try to back in the direction of the drift.
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38.
To use the controlled braking method in an emergency, you should:
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apply the brakes as hard as you can without locking the wheels.
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apply the brakes when the wheels lock up.
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apply your brakes all the way, and release the brakes when the wheels lock up.
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39.
The heavier the vehicle:
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the less work the brakes must do to stop it.
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the higher the center of gravity will be.
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the more work the brakes must do to stop it.
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40.
When driving past parked vehicles, you should:
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watch for clues that the parked vehicle is about to move.
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turn on your taillights.
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sound your horn.
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