Free California CDL Combination Vehicles Practice Test 2022

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 2022 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
List of questions
1.
After supplying air to the trailer, how should you check for crossed air lines?
2.
The air lines on a combination vehicle are often colored to prevent them from mixing up. The emergency line is _____, the service line is _________.
3.
The trailer air supply control knob is:
4.
You have coupled with a semitrailer, where should you put the iron trailer supports before driving away?
5.
Supplied by the service line from the tractor, each trailer or dolly has its own:
6.
The trailer service brakes should be tested with the hand control, and controlled during normal operation by:
7.
There are two things that a driver can do to prevent a rollover. They are: (1) keep the cargo as close to the ground as possible and (2):
8.
Before coupling or uncoupling, the trailer wheels should always be:
9.
A major leak in the trailer emergency line will cause:
10.
Your emergency air line breaks or gets pulled apart while you are driving. The loss of pressure will cause the:
11.
To help release the fifth wheel locking lever:
12.
When should you use the hand valve to park a combination vehicle?
13.
The tractor should be positioned to back under the trailer:
14.
When parking trailers without spring brakes, it is very important to:
15.
Rocky mountain doubles have a rearward amplification of about:
16.
What gear should the tractor engine be in after you uncouple the trailer and are inspecting the trailer supports?
17.
At the back of trailer used to tow other trailers are shut-off valves, also called:
18.
When coupling, the proper position of the fifth wheel is:
19.
Glad hands are usually connecting which of these?
20.
While checking if the trailer is securely coupled to the tractor, the landing gears should be: