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 function of an "application pressure gauge"?
2.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
3.
To test the tractor protection valve, the engine needs to be:
4.
In terms of stability, doubles and triples are:
5.
The braking power of the spring brakes ______.
6.
A low pressure warning signal could be __________.
7.
On older vehicles, a low air pressure warning signal comes on at what psi?
8.
An air brake is made up of which of the following braking systems?
9.
Which of these statements about quick steering movements and doubles/triples is true?
10.
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?
11.
How do you check the low pressure warning signal?
12.
You are visually checking the coupling of a converter dolly to the rear trailer. How much space should be between the upper and lower fifth wheel?
13.
After coupling the converter dolly to the first trailer, the pintle hook should be:
14.
Which of the following factors explains why the total stopping distance for air brakes is longer than that for hydraulic brakes?
15.
Why should you drain water from compressed air tanks?
16.
Where are the brake drums located?
17.
What affects the stopping distance for air brakes?
18.
In dual-air systems the pressure should build to _______.
19.
To position the converter dolly over short distances you can:
20.
Vehicles with air brakes have pressure gauges connected to the _______.