Free Minnesota CDL Double/Triple Trailers Practice Test 2022

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 2022 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
1.
Air brakes take longer to stop than hydraulic brakes because _______.
2.
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:
3.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
4.
Brake drums should not have cracks longer than what length?
5.
When uncoupling twin trailers you should park:
6.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
7.
Air tanks need to be drained ______.
8.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
9.
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
10.
How should the air leakage rate be tested?
11.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
12.
The tractor protection valve should pop out when air pressure falls to:
13.
Wedge brakes and disc brakes are ______ than s-cam brakes.
14.
What is a front brake limiting valve?
15.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
16.
Why should the air hoses connected to the brake chambers be checked?
17.
Why should you never push the brake pedal down when the spring brakes are on?
18.
Why do some air brake systems have an alcohol evaporator?
19.
Where are the brake drums located?
20.
If the malfunction lamp stays on after the bulb check, __________.