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North Carolina CDL Practice Test: Double and Triples - Test 2020

(From the 2020 North Carolina CDL Handbook)
Number of tests: 24
Number of questions: 30
Passing score: 80

Directions: To obtain this endorsement for pulling two or three trailers, applicants must pass a 15-question test. And to pass the test, applicants must score at least 80%. Test questions are from the North Carolina Commercial Driver Handbook. The Double/Triple trailers endorsement can be used with the Class A CDL. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at North Carolina DMV locations.

You have made error(s) so far.
Your Challenge Library: 0

1. How can you test the trailer brakes?

2. If there is rust around the wheel nuts what should you do?

3. While driving a combination vehicle, you should follow at least ____ second for each ____ ft. of your vehicle length.

4. Inspect your wheels and rims to make sure ______.

5. Stop light switches are necessary because ________.

6. Coolant recovery containers permit you to ________.

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