Free North Carolina CDL Double/Triple Trailers Practice Test 2023

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 2021 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
What is proper braking technique for drivers travelling down a hill or any other downgrade?
How can you be sure you supplied air to a second trailer?
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
The most efficient way to drive down a long grade is to ________.
A low pressure warning signal could be __________.
Automatic adjusters should ________.
On older vehicles, a low air pressure warning signal comes on at what psi?
When uncoupling twin trailers you should park:
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?
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
After coupling the converter dolly to the first trailer, the pintle hook should be:
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
When checking that air is flowing to all trailers, what is used to provide air to the supply lines?
Why should you never leave your vehicle unattended without applying the parking brakes?
It's important that a warning signal comes on before the air pressure in the tank falls below _______.
If the air compressor does not have its own oil supply, how is it lubricated?
Why should the air hoses connected to the brake chambers be checked?
When performing the controlled braking method for an emergency stop, you are _________.
Where are the brake drums located?
What affects the stopping distance for air brakes?