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.
When a vehicle goes around a corner, the rear wheels follow a different path than the front. This is called:
2.
A tractor with a _______ trailer, requires the most amount of stopping distance.
3.
To prevent water and dirt from entering the air system, hose couplers can be attached to dummy couplers or:
4.
You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is:
5.
In order to allow the trailer brakes to be applied more quickly, what is connected to the service air line?
6.
You are driving a combination vehicle when the trailer breaks away, pulling apart both air lines. You expect the trailer brakes to come on and:
7.
If the service line comes apart while you are driving a combination vehicle, but the emergency line stays together, what will happen right away?
8.
When coupling, trailer height should:
9.
A major leak in the trailer emergency line will cause:
10.
Converter dollies:
11.
When parking trailers without spring brakes, it is very important to:
12.
How should you test the tractor-semitrailer connection for security?
13.
When coupling or uncoupling, all of these apply to the trailer except:
14.
To stop a trailer skid you should:
15.
To test the trailer brakes before driving, use the hand valve or the:
16.
Why should you be sure that the fifth wheel plate is greased as required?
17.
When backing a tractor under a trailer you should:
18.
Where should the tractor be when you inspect the landing gear after uncoupling the trailer?
19.
While checking if the trailer is securely coupled to the tractor, the landing gears should be:
20.
In case of landing gear failure while pulling out from under it, you should: