Free Colorado CDL Combination Vehicles Practice Test 2022

You have to pass the Colorado CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for a good Colorado CDL practice test source for your coming CDL test? You are in the right place. Our CDL practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. Our Practice Test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Colorado CDL manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free Colorado CDL Combination Vehicles Practice Test today and walk out with your endorsement!

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 Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
To prevent moisture from entering the electrical cable when disconnected:
2.
After supplying air to the trailer, how should you check for crossed air lines?
3.
A function of the tractor protection valve is:
4.
The trailer service brakes should be tested with the hand control, and controlled during normal operation by:
5.
When uncoupling, make sure that the parking area:
6.
When backing under the trailer, air lines:
7.
Before coupling or uncoupling, the trailer wheels should always be:
8.
To stop other drivers from passing you on the right when turning wide:
9.
The tractor should be positioned to back under the trailer:
10.
If the wheels of the trailer lock up and the trailer swings around, it could cause a:
11.
When you notice that your trailer has lost traction and is going into a skid, you should:
12.
Some of the points for inspecting the coupling include the following except:
13.
The best and earliest way to recognize that your trailer has started to skid is:
14.
Driving with an empty trailer:
15.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
16.
The "rearward amplification" value means:
17.
When backing under the trailer, do all of the following except:
18.
Before getting out to inspect the coupling, secure the vehicle by putting transmission in neutral, shutting off engine and taking the key with you, and:
19.
While driving, you should use the trailer hand valve when?
20.
A specific item to check on a sliding fifth wheel is: