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Nebraska 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 two, three or four possible answer choices. Test questions come from the Nebraska 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.
You have made error so far
Passing grade —
4 or fewer errors
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1.
While uncoupling, the landing gear should be:
Raised completely.
Lowered halfway.
Just off the pavement.
Firmly on the ground.
2.
When should you watch out for black ice?
When it is snowing
When the temperature is below freezing and the road looks wet
When the temperature is above freezing and there is snow on the ground
Just after a rainstorm
3.
Brake fade is a result of:
Exposure to sunlight.
Exposure to moisture.
Excessive use.
Not using the brakes enough.
4.
Before positioning a converter dolly for coupling, you should release the dolly's air brakes. Do this by:
Removing the dolly parking brake control.
Opening the air tank petcock.
Raising the dolly support.
5.
When driving a trailer with ABS, you should:
Not depress the brakes as much as you would when driving a vehicle without ABS.
Use extra braking force to ensure the ABS kicks in.
Brake as you would when driving a vehicle without ABS.
Try to not brakes as often as you would when driving a vehicle without ABS.
6.
When traveling down a downgrade, the speed of a vehicle will likely:
Decrease.
Stay the same.
Increase.
7.
When driving, it is important that you:
Develop plans to get out of potentially dangerous situations.
Enjoy the scenery.
Turn your head all the way around rather than use mirrors.
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