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Question 1
Before backing your tractor under the trailer, make sure your trailer brakes are:
Correct Answer:
Locked.
Question 2
An air supply control lever should be in its "normal" position when you are:
Correct Answer:
Pulling a trailer.
Question 3
A tractor protection valve is:
Correct Answer:
A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
Question 4
Which of the following will not help prevent a rig from rolling over?
Correct Answer:
Driving on the shoulder of a road
Question 5
Place the trailer air supply control in its "emergency" position to test:
Correct Answer:
The trailer emergency brakes.
Question 1 of 25
Exam overview

About this Exam

Prepare with the North Carolina CDL Combination Test 2 practice quiz. This question bank includes 25 questions covering trailer, supply, control, tractor, and valve. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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North Carolina CDL Combination Test 2

This practice set contains 25 questions from the matching question bank and focuses on trailer, supply, control, tractor, and valve. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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