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 "cut-in" pressure for most air compressor governors?
2.
What is the purpose of a front-brake limiting valve?
3.
When coupling, correct trailer height should:
4.
If air supply drops when driving, the tractor protection valve ________.
5.
How can you be sure you supplied air to a second trailer?
6.
On large buses low pressure warning devices usually signal at ______.
7.
You will test that the trailer service brakes are working by:
8.
Automatic adjusters should ________.
9.
The service brake system ________.
10.
What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
11.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
12.
Pushing the brake pedal down when the spring brakes are on could _________.
13.
What distinguishes a wedge brake from other types of brakes?
14.
Where is compressed air stored?
15.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
16.
Why should you never leave your vehicle unattended without applying the parking brakes?
17.
Which of the following is the most common reason brakes fade?
18.
Why should the air hoses connected to the brake chambers be checked?
19.
When you make an emergency stop, you should _________.
20.
Why should you never push the brake pedal down when the spring brakes are on?