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North Dakota CDL Permit Test - Double

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.
You have made error so far
Passing grade —
4 or fewer errors
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1.
When it is difficult for others to see your vehicle, such as at dawn or dusk, you can help other drivers by:
Keeping your lights off.
Turning your lights on.
Driving on the shoulder.
Waving an arm out the window.
2.
When pulled off on the side of the road, a driver should:
Keep the driver’s side door open.
Turn on their emergency flashers.
Wave their arms.
Turn off all lights.
3.
How much water is needed on a road surface for a vehicle to hydroplane?
Usually several inches
A good amount, such as a large puddle
A small amount
No water
4.
When checking tires, finding which of the following is not a cause for concern?
Too much air pressure
Too little air pressure
Radial and bias-ply tires used together
Tread of at least 2/32 an inch on rear tires
5.
When starting a vehicle, the oil pressure should:
Slowly build up pressure over a few minutes.
Come up to a normal level within a few seconds.
Start high, then decrease quickly while the engine runs.
6.
The height of a vehicle’s center of gravity:
Usually has no impact on the handling the vehicle.
Plays a large role in a driver's ability to safely handle the vehicle.
Should not be a concern when loading the vehicle.
Should only be a concern if there are lots of hills on the planned route.
7.
When the wheels of a trailer lock up:
The trailer will stay straight.
The trailer tends to swing around.
The cab will swing, but the trailer will stay straight.
They will likely go flat.
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