Double #2
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.
✓
You Passed!
✕
You Failed!
Number of Questions
20
Passing Score
16
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To Pass
0
Correct
0
Incorrect
0
16. When only the tractor is equipped with an Anti-Lock Braking System (ABS):
The brakes will not work as effectively as they would without ABS.
There is a decreased risk of jackknifing.
The brakes will become more sensitive.
There is an increased risk of jackknifing.
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17. Mirrors should be adjusted:
While moving.
By an assistant.
When you are standing next to the vehicle.
When the trailers are straight.
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18. A shut-off valve:
Should always be open.
Is located on the instrument panel.
Is located on the front of a trailer.
Prevents air from escaping an air brake system.
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