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 "cut-in" pressure for most air compressor governors?
2.
What should you do when the low air pressure warning comes on?
3.
What is the purpose of a front-brake limiting valve?
4.
The most efficient way to drive down a long grade is to ________.
5.
An air brake is made up of which of the following braking systems?
6.
When uncoupling twin trailers you should park:
7.
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true except:
8.
If the dolly has spring brakes, release them with:
9.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
10.
How should the air leakage rate be tested?
11.
After coupling the converter dolly to the first trailer, the pintle hook should be:
12.
Which of the following is the most common reason brakes fade?
13.
If you have manual transmission _________.
14.
Why should air tanks be drained completely?
15.
Typically, air storage tanks hold enough air to allow the brakes to be used _______ even if the compressor stops working.
16.
Water and oil _______.
17.
Why should you drain water from compressed air tanks?
18.
The last step to uncouple a converter dolly is:
19.
Drivers of doubles and triples must take into greater account:
20.
A converter dolly is used: