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Virginia CDL Permit Test - Combination
(From the 2021 Virginia CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 16 |
Directions:
All applicants who are applying for a Class A CDL should be prepared to take the Combination test. This test covers information found in Section 6 of the Commercial Driver License Manual. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 20 multiple-choice questions, and applicants will need to correctly answer a minimum of 16 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
Passing grade —
4 or fewer errors
advertising
1.
A combination vehicle has ____ air line(s).
2.
The "crack-the-whip" effect can:
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Turn over a trailer.
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Be more effective than braking.
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Make a truck move faster.
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3.
If a load is placed on one side of a trailer, the trailer:
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May lean during turns.
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May add extra support during turns.
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May be easier to steer during turns.
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4.
Which of the following will not help prevent a rig from rolling over?
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Keeping the cargo as close to the ground as possible
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Driving slowly around turns
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Driving on the shoulder of a road
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5.
Rollovers happen when:
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You drive too slowly.
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You are stopped.
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You take a turn too fast.
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6.
What is the Johnson bar?
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A hand valve that works the trailer brakes
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A valve that indicates the fuel level
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A valve that limits the amount of cargo
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7.
When connecting a converter dolly to a second trailer, the trailer height should be ____ the center of the fifth wheel.
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Level with
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Slightly higher than
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Slightly lower than
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