Free North Dakota 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 Dakota CDL double/triple trailer endorsement test, make sure to know it! Our ND CDL Practice Test has the same questions as the real exam which is based on the North Dakota 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 Dakota 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 ND commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ND CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What should you do when the low air pressure warning comes on?
2.
You will test that the trailer service brakes are working by:
3.
With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear:
4.
When coupling or uncoupling, trailer or dolly wheel should always be:
5.
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
6.
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
7.
A safety valve that releases air _______.
8.
How should the air leakage rate be tested?
9.
Automatic air tanks _______.
10.
Pushing the brake pedal down when the spring brakes are on could _________.
11.
When driving doubles or triples, for safer handling which trailer should be at the rear?
12.
After coupling the converter dolly to the first trailer, the pintle hook should be:
13.
Why should you never leave your vehicle unattended without applying the parking brakes?
14.
Which of the following is the most common reason brakes fade?
15.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
16.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
17.
What does the air compressor governor control?
18.
In dual-air systems the pressure should build to _______.
19.
When inspecting doubles and triples shut-off valves, which of the following is true?
20.
You can test whether the trailer air system is charged by: