Free Colorado CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the CDL double/triple trailer endorsement test, make sure to know it! Our Colorado CDL practice test has the same questions as the real exam which is based on the Colorado 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 Colorado 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 CO commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CO CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
To test the tractor protection valve, the engine needs to be:
2.
How do air-operated disc brakes work?
3.
In terms of stability, doubles and triples are:
4.
When you turn with the tractor/triple trailer combination, the wheels that off-track (cheat) the most are:
5.
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?
6.
The air compressor should pump air starting at what psi?
7.
A front brake limiting valve ______.
8.
Which of these statements about the handling of doubles and triples is true?
9.
The trailer air supply control should pop out when the air pressure falls into the pressure range of:
10.
Automatic air tanks _______.
11.
An air compressor can be cooled by _______.
12.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
13.
When testing the trailer emergency brakes, charge the system, pull out the trailer air supply control, and:
14.
What is a front brake limiting valve?
15.
It's important that a warning signal comes on before the air pressure in the tank falls below _______.
16.
Why should you never push the brake pedal down when the spring brakes are on?
17.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
18.
Where are the brake drums located?
19.
To position the converter dolly over short distances you can:
20.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?