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Free California CDL Combination Vehicles Practice Test 2023

You have to pass the California CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for good source material for your coming CDL test? You are in the right place. Our CDL practice test website 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. The California CDL Combination Vehicles Practice Test covers topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official California CDL Handbook 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 California CDL Practice Test today and walk out with your endorsement!

Our CDL practice tests:
Based on 2021 CA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CA CDL Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
Study now
List of questions
1.
You should not back a tractor under a trailer until the air system is:
2.
While driving behind another vehicle, under good conditions, you should allow at least one second between your vehicle and the vehicle ahead for each ____ feet of your vehicle length.
3.
To unlock the fifth wheel, the locking lever should be placed in the ______ position.
4.
When you are uncoupling a loaded trailer, you should lower the landing gear until it:
5.
After you lock the kingpin into the fifth wheel, you should check the connection by:
6.
Off-tracking or cheating causes which of these to follow the wider path while making a turn?
7.
You have pushed the trailer air supply valve. You should not back a tractor under a trailer until the whole air system is:
8.
The trailer hand valve should be used:
9.
When you notice that your trailer has lost traction and is going into a skid, you should:
10.
The emergency air line is usually what color?
11.
Some of the points for inspecting the coupling include the following, EXCEPT:
12.
Crack-the-whip effect occurs when:
13.
Why should you be sure that the fifth wheel plate is greased as required?
14.
To stop a trailer skid you should:
15.
You are coupling a tractor to a semitrailer and have backed up, but are not under it. What should you hook up before backing under?
16.
When backing a tractor under a trailer you should:
17.
The hand valve should be used:
18.
When backing under the trailer, do all of the following, EXCEPT:
19.
While driving, you should use the trailer hand valve when?
20.
A specific item to check on a sliding fifth wheel is:
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