Free Minnesota CDL Double/Triple Trailers Practice Test 2023

Do you know how to pair double or triple trailers? If you are planning to take the Minnesota CDL double/triple trailer endorsement test, make sure to know it! Our MN CDL Practice Test has the same questions as the real exam which is based on the MN 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 Minnesota 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 MN commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MN CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
What is the "cut-in" pressure for most air compressor governors?
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
On large buses low pressure warning devices usually signal at ______.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
When connecting converter dolly to the front trailer, support gear should be:
After coupling, the air shut-off valves at the back of the first trailer should be:
How often should alcohol containers be checked during cold weather?
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:
The increased likelihood of doubles and triples turning over is called:
A safety valve that releases air _______.
Before you can supply air to the air tanks of a second trailer you need to:
A danger of a malfunctioning tractor protection valve is:
Which of the following is the most common reason brakes fade?
Why should air tanks be drained completely?
It's important that a warning signal comes on before the air pressure in the tank falls below _______.
When performing the controlled braking method for an emergency stop, you are _________.
Water and oil _______.
The last step to uncouple a converter dolly is:
When uncoupling the rear trailer, which of these should be done first?