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The maximum permitted total weight of a vehicle and its cargo
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The minimum permitted weight of a trailer
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The maximum permitted weight of a trailer and its contents
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The maximum permitted weight of only a tractor
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North Dakota CDL Permit Test - Double
(From the 2020 North Dakota 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 four possible answer choices. Test questions come from the North Dakota Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Transporting Cargo 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.
What is the Gross Vehicle Weight Rating (GVWR)?
2.
A vehicle stopped at a green light may indicate that the driver:
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Is impaired.
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Is colorblind.
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Does not know the rules of the road.
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Is very patient.
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3.
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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4.
The emergency air line:
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Is controlled by the foot brake.
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Is connected to the relay valves.
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Supplies air to the trailer air tanks.
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Prevents skids.
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5.
Too little weight on a steering axle can result in:
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Poor traction.
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Increased visibility.
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Longer stopping distances.
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Improved gas mileage.
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6.
When driving down a steep grade:
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You should ride your brakes all the way down.
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Shift into a higher gear as a way to slow down your vehicle.
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Shift into lower gears as a way to slow down your vehicle.
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The truck should be put in neutral as a way to slow down your vehicle.
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7.
What can happen if parking brakes are used in very wet weather with temperatures below freezing?
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The brakes will squeak.
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The brakes may freeze so the vehicle cannot move.
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The brakes may suddenly release by themselves.
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The brakes may become too smooth to be used.
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