Free New Jersey CDL Double/Triple Trailers Practice Test 2023

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 2021 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
In terms of stability, doubles and triples are:
When connecting converter dolly to the front trailer, support gear should be:
Air brakes take longer to stop than hydraulic brakes because _______.
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:
To check if the converter dolly is securely coupled to the rear trailer you should:
A front brake limiting valve ______.
The air compressor should pump air starting at what psi?
During normal operation, the brakes of the double/triple trailer are controlled by:
If the dolly has spring brakes, release them with:
The service brake system ________.
Automatic air tanks _______.
How should the air leakage rate be tested?
What distinguishes a wedge brake from other types of brakes?
When increased application pressure to maintain the same speed becomes necessary, you should ______.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
When checking that air is flowing to all trailers, what is used to provide air to the supply lines?
Why should the air hoses connected to the brake chambers be checked?
Water and oil _______.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
A visual inspection after coupling should show that: