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.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
2.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
3.
When coupling, correct trailer height should:
4.
To test the tractor protection valve, the engine needs to be:
5.
If air supply drops when driving, the tractor protection valve ________.
6.
The air compressor governor stops air from pumping when it reaches the "cut-out" level or around generally _________.
7.
How do air-operated disc brakes work?
8.
Air brakes take longer to stop than hydraulic brakes because _______.
9.
After coupling, the air shut-off valves at the back of the first trailer should be:
10.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
11.
You are driving a set of doubles and a set of trailer wheels goes into a skid. Which of these is most likely to occur?
12.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
13.
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
14.
Wedge brakes and disc brakes are ______ than s-cam brakes.
15.
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
16.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
17.
What is a front brake limiting valve?
18.
Why should you never push the brake pedal down when the spring brakes are on?
19.
Where are the brake drums located?
20.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?