Free New Jersey CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the CDL double/triple trailer endorsement test, make sure to know it! Our CDL Practice Test NJ has the same questions as the real exam which is based on the NJ 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 New Jersey 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 NJ commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NJ CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the function of an "application pressure gauge"?
2.
The air compressor governor stops air from pumping when it reaches the "cut-out" level or around generally _________.
3.
On large buses low pressure warning devices usually signal at ______.
4.
Automatic adjusters should ________.
5.
How often should alcohol containers be checked during cold weather?
6.
Brake linings should not be _______.
7.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
8.
A safety valve that releases air _______.
9.
You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel?
10.
What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
11.
Before you can supply air to the air tanks of a second trailer you need to:
12.
If you want to couple a second trailer to your combination vehicle, secure it by using:
13.
If the air compressor has its own oil supply you should do what before driving?
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.
Why should air tanks be drained completely?
17.
A safe speed on a curve for a smaller commercial vehicle:
18.
What affects the stopping distance for air brakes?
19.
Why should you not drive your vehicle if the air pressure does not build up quickly enough?
20.
A converter dolly is used: