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Three inches of space between the upper and lower fifth wheel.
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No space between the upper and lower fifth wheel.
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A moderate amount of space between the upper and lower fifth wheel.
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North Carolina CDL Permit Test - Double
(From the 2020 North Carolina CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 16 |
Directions:
This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three or four possible answer choices. Test questions come from the North Carolina Commercial Driver License Manual. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
Passing grade —
4 or fewer errors
advertising
1.
Once a coupling is completed, there should be:
2.
Low underneath clearance can cause difficulties when driving:
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Over railroad crossings.
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On gravel roads.
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Around corners.
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At the posted speed limit.
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3.
When parking a double or triple vehicle:
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You should back into your parking spot.
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You should park on the roadway.
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You should park in a location where you can pull forward to exit.
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You should ask people to move their vehicles.
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4.
An open automobile window in cold weather may indicate that the driver is:
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Driving impaired.
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Inappropriately dressed.
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Using the heat inside their vehicle.
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Enjoying the fresh air.
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5.
If feeling sleepy while driving, you should:
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Press on and finish the trip.
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Drive faster to arrive to your destination sooner.
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Leave the road and take a nap.
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Take an energy pill.
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6.
Belts in the engine compartment should be:
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Frayed.
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Tight.
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Greasy.
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Easy to slide off.
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7.
If you have an engine fire, you should:
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Open the hood as soon as possible.
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Turn off the engine as soon as possible.
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Not use a fire extinguisher.
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