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 purpose of an antilock braking system (ABS)?
2.
When coupling, correct trailer height should:
3.
When driving a truck with more than one trailer, which trailer should be first behind the truck?
4.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
5.
The converter dolly air tank drain valve on coupled double/triple trailers should be:
6.
Air brakes take longer to stop than hydraulic brakes because _______.
7.
You will test that the trailer service brakes are working by:
8.
The increased likelihood of doubles and triples turning over is called:
9.
Which of these statements about quick steering movements and doubles/triples is true?
10.
During normal operation, the brakes of the double/triple trailer are controlled by:
11.
Why should you check the brake adjustment often?
12.
When the safety valve releases air this indicates ___________.
13.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
14.
If your vehicle is not equipped with ABS, when you brake hard on a slippery surface what may occur?
15.
To apply the parking brakes, you should _______.
16.
If the air compressor does not have its own oil supply, how is it lubricated?
17.
When performing the controlled braking method for an emergency stop, you are _________.
18.
What affects the stopping distance for air brakes?
19.
Why should you not drive your vehicle if the air pressure does not build up quickly enough?
20.
When uncoupling the rear trailer, which of these should be done first?