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Delaware CDL Permit Test - Combination
(From the 2021 Delaware 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 State of Delaware 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
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1.
In a double or triple combination, the ____ trailer should be directly behind the cab.
2.
To help prevent rollovers, you should:
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Accelerate quickly after stopping.
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Drive slowly around turns.
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Keep the load near the back of the trailer.
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Keep the load on one side of the trailer.
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3.
To lower the risk of a rollover, you should:
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Load the cargo as far forward as possible.
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Load the cargo as far back as possible.
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Load the cargo as low as possible.
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Stack the cargo as high as possible.
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4.
Having anti-lock brakes on only one axle:
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Will not make a difference in braking.
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Will provide increased control in braking.
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Will likely cause the air brakes to malfunction.
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5.
The best way to recognize that your trailer has begun to skid is by:
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Seeing other drivers' faces.
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Seeing it in your mirrors.
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Feeling it.
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Listening to the radio.
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6.
Look for matching colors when coupling glad hands. Service lines are often:
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Green.
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Orange.
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Red.
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Blue.
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7.
When backing up your tractor while coupling it to a trailer, the trailer brakes should be:
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Deactivated.
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Locked.
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Unlocked.
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