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.
Which of the following is part of the electrical and air lines coupling inspection?
2.
When a vehicle goes around a corner, the rear wheels follow a different path than the front. This is called:
3.
The trailer air supply control knob is:
4.
When you open the emergency shut-off valve at the back of the last trailer after supplying air to trailer(s):
5.
For proper hose coupling, lines are often color-coded. Service lines are usually:
6.
The shut-off valves at the back of the last trailer should be:
7.
Over 50% of truck driver accident deaths are caused by:
8.
To prevent water and dirt from entering the air system, hose couplers can be attached to dummy couplers or:
9.
To make coupling and uncoupling a loaded trailer easier:
10.
In order to allow the trailer brakes to be applied more quickly, what is connected to the service air line?
11.
If you have to enter another traffic lane to complete a wide turn, you should:
12.
When coupling, trailer height should:
13.
When driving a combination vehicle with multiple trailers or dollies, all air shut-off valves except the last one at the back must be:
14.
A major leak in the trailer emergency line will cause:
15.
The trailer hand valve should be used:
16.
The emergency air line is usually what color?
17.
When uncoupling, the tractor should:
18.
When coupling or uncoupling, all of these apply to the trailer except:
19.
To test the trailer brakes before driving, use the hand valve or the:
20.
In case of landing gear failure while pulling out from under it, you should: