Free Colorado CDL Double/Triple Trailers Practice Test 2023

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 2021 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
The air compressor governor stops air from pumping when it reaches the "cut-out" level or around generally _________.
Automatic adjusters should ________.
To check if the converter dolly is securely coupled to the rear trailer you should:
An air brake is made up of which of the following braking systems?
When driving doubles or triples in adverse or slippery weather conditions, all of the following are true except:
If the dolly has spring brakes, release them with:
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
How should the air leakage rate be tested?
If you want to couple a second trailer to your combination vehicle, secure it by using:
When driving doubles or triples, for safer handling which trailer should be at the rear?
After coupling the converter dolly to the first trailer, the pintle hook should be:
When you need to apply more pressure to help your brakes work normally effectively, this means that your brakes are fading. Which of the following can cause fading brakes?
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
Which of the following is the most common reason brakes fade?
If you have manual transmission _________.
What does the air compressor governor control?
Water and oil _______.
If the malfunction lamp stays on after the bulb check, __________.
The last step to uncouple a converter dolly is:
A converter dolly is used: