Free Kentucky CDL Double/Triple Trailers Practice Test 2023

Do you know how to pair double or triple trailers? If you are planning to take the Kentucky CDL double/triple trailer endorsement test, make sure to know it! Our Kentucky CDL Practice Test has the same questions as the real exam which is based on the KY 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 Kentucky 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 KY commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
KY CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
What is the function of an "application pressure gauge"?
What should you do when the low air pressure warning comes on?
What is a modulating control valve?
To test the tractor protection valve, the engine needs to be:
If air supply drops when driving, the tractor protection valve ________.
How do air-operated disc brakes work?
The braking power of the spring brakes ______.
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
On older vehicles, a low air pressure warning signal comes on at what psi?
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
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?
When uncoupling twin trailers you should park:
Which of these statements about the handling of doubles and triples is true?
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
A safety valve that releases air _______.
Automatic air tanks _______.
An air compressor can be cooled by _______.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
It's important that a warning signal comes on before the air pressure in the tank falls below _______.
To apply the parking brakes, you should _______.