Free North Carolina CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the North Carolina CDL double/triple trailer endorsement test, make sure to know it! Our NC CDL Test has the same questions as the real exam which is based on the NC CDL Manual. It covers most of the subject areas on the Double/Triple Trailers Test such as pulling double and triple trailers, the risk of rollover, managing space, and special considerations when hauling multiple trailers. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, you can take this CDL practice test an unlimited number of times to make sure you learn all the questions. Let’s try our Free North Carolina CDL Double/Triple Trailers Practice Test today and pass your CDL endorsement exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 NC commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NC CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the purpose of a modulating control valve?
2.
What is the "cut-in" pressure for most air compressor governors?
3.
When connecting converter dolly to the front trailer, support gear should be:
4.
How often should alcohol containers be checked during cold weather?
5.
To check if the converter dolly is securely coupled to the rear trailer you should:
6.
The increased likelihood of doubles and triples turning over is called:
7.
The service brake system ________.
8.
A safety valve that releases air _______.
9.
Automatic air tanks _______.
10.
Pushing the brake pedal down when the spring brakes are on could _________.
11.
You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
12.
Letting up on the brake pedal _______.
13.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
14.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
15.
Where is compressed air stored?
16.
When you need to apply more pressure to help your brakes work normally effectively, this means that your brakes are fading. Which of the following can cause fading brakes?
17.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
18.
You can test whether the trailer air system is charged by:
19.
When inspecting doubles and triples shut-off valves, which of the following is true?
20.
Drivers of doubles and triples must take into greater account: