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The stiff suspension springs and strong brakes will have high traction.
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The stiff suspension springs and strong brakes will have low traction.
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The brakes only operate when a trailer reaches a minimum weight.
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The suspension springs only operate when a trailer reaches a minimum weight.
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New Hampshire CDL Permit Test - Combination
(From the 2021 New Hampshire 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 New Hampshire CDL Driver's Guide. 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 have 30 minutes to correctly answer a minimum of 16 questions. The Combination test is not a replacement for the Double/Triple endorsement test.
Passing grade —
4 or fewer errors
advertising
1.
A lightly-loaded combination vehicle will stop more slowly than a fully-loaded vehicle because:
2.
To prevent a rollover, cargo should be:
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Loaded with most weight on the driver’s side of the trailer.
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Placed near the rear of the trailer.
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Spread out in the trailer.
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3.
Trailers manufactured after ____ must be equipped with Anti-Lock Braking Systems (ABS).
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1943
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1998
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2009
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2015
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4.
If unsure if a trailer is equipped with ABS, you can:
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Check under the trailer for wheel speed sensors coming from the back of the brakes.
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Try driving on a slippery surface and see if ABS kicks in.
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Assume it does have ABS.
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Remove a tire and look for the ABS sensor on the axle.
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5.
A trailer that is too high:
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May not couple correctly.
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Will couple securely.
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Is not an issue.
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6.
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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7.
Which of the following types of vehicles is most prone to the “crack-the-whip" effect?
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An automobile
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A three-axle tractor
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A bobtail tractor
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A triple combination
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