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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.
Before you back under a trailer, make sure that:
2.
To prevent moisture from entering the electrical cable when disconnected:
3.
The likelihood of a fully loaded rig turning over compared to an empty trailer is:
4.
When inspecting the coupling area, all of the following are required, EXCEPT:
5.
The higher the center of gravity of your truck, the:
6.
A function of the tractor protection valve is:
7.
Hose couplers are also referred to as:
8.
The iron trailer supports are up and the trailer is resting on the tractor. Make sure:
9.
After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. This is done by:
10.
When backing under the trailer, air lines:
11.
When pulling trailers:
12.
When unlocking the fifth wheel in Step 6, all of the following apply, EXCEPT:
13.
Improperly greased or lubricated fifth wheels will cause:
14.
When checking the trailer emergency brakes, the tractor protection control valve should be placed in what position?
15.
After connecting the air lines but before backing under the trailer you should:
16.
To test the tractor protection valve, pump the brakes with the engine off until the trailer air supply knob pops out, usually at:
17.
When driving a set of doubles, it is necessary to close which shut-off valve in the last trailer:
18.
You are coupling a tractor to the semitrailer; you have connected the airlines. Before backing under the trailer, you should:
19.
If you cannot complete your turn without entering another traffic lane you should:
20.
Why should you lock the tractor glad hands to each other (or dummy couplers) when you are not towing a trailer?
California Air Brake TestCalifornia Tanker Vehicles TestCalifornia General Knowledge TestCalifornia School Bus TestCalifornia Doubles/ Triples Trailers TestCalifornia Pre-Trip TestCalifornia Hazmat TestCalifornia Passenger Vehicles TestCalifornia Combination Vehicles Test