Free Missouri CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Missouri CDL double/triple trailer endorsement test, make sure to know it! Our Missouri CDL Practice Test has the same questions as the real exam which is based on the Missouri CDL Book. 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 Missouri 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 MO commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MO CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the purpose of an antilock braking system (ABS)?
2.
Automatic slack adjusters ________.
3.
You are driving a 100-foot truck with double trailers at 30 mph. The road is dry, and visibility is good. You should keep at least ______ seconds of space ahead of you.
4.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
5.
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:
6.
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
7.
The air compressor should pump air starting at what psi?
8.
A front brake limiting valve ______.
9.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
10.
If the dolly has spring brakes, release them with:
11.
Letting up on the brake pedal _______.
12.
A danger of a malfunctioning tractor protection valve is:
13.
If the air compressor has its own oil supply you should do what before driving?
14.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
15.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
16.
What is a front brake limiting valve?
17.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
18.
Drivers of doubles and triples must take into greater account:
19.
The last step to uncouple a converter dolly is:
20.
A converter dolly is used: