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.
What is the function of an "application pressure gauge"?
2.
To test the tractor protection valve, the engine needs to be:
3.
How do air-operated disc brakes work?
4.
In terms of stability, doubles and triples are:
5.
The air compressor should pump air starting at what psi?
6.
A front brake limiting valve ______.
7.
The most common type of foundation brake is?
8.
A safety valve that releases air _______.
9.
Automatic air tanks _______.
10.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
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.
Where are the brake drums located?
18.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?
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?