Double
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
17. When using a fire extinguisher on a fire, you should:
Get as close to the fire as possible.
Aim the extinguisher at the top of the fire.
Stand as far away from the fire as possible.
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19. Before attempting to put out an engine fire:
The accelerator should be depressed to use up the remaining fuel.
The engine should be turned off.
The hood should be opened.
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20. If the emergency air line loses pressure:
The rear trailer will detach from the combination.
The tractor protection valve will close.
The service brakes will activate.
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