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CA CDL Combination Vehicles Practice Test 4 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

Starting a career as a commercial driver involves meeting specific requirements. To get a Class A CDL (Commercial Driver’s License), you must pass several theory and skills exams. You can begin the licensing process as soon as you turn 18, but you won’t be allowed to transport passengers, carry hazardous materials, or drive across state lines until you turn 21.

Applications can be submitted at any DMV office. They must be accompanied by identification documents, a valid driver’s license, proof of California residency, and payment of licensing fees. To ensure physical fitness for this job, you must also pass a vision test and a medical examination performed by a certified medical examiner. If you plan to engage exclusively in excepted commerce, you are exempt from undergoing a medical examination.

The official general knowledge test is the first theory exam you will take on your journey to becoming a commercial driver. It is based on the official Commercial Driver Handbook (California CDL Handbook 2025), which you should read at least once. A minimum score of 80% is required to pass. Our Free California CDL Permit Practice Test can help you achieve a passing score on your first attempt. You can train with it anytime, anywhere in the world.

If you are interested in driving combination vehicles, you must also pass the official combination vehicles knowledge test. To help you prepare for this exam, we have created a series of practice tests based on Section 6 (Combination Vehicles) of the official Commercial Driver Handbook.

This particular California CDL Combination Practice Test includes 30 multiple-choice questions. Each question comes with a detailed explanation that helps you understand the reasoning behind the correct answer. Customize your testing experience with the test settings menu, which includes several features, such as a slider for adjusting the font size and a language switcher. You can access this menu by clicking the three dots in the top-right corner of the page.

Several study tools are available to help you study for your theory exams, but our practice tests are the most efficient. They enable active learning, making it easier for you to retain information and apply it in real-world driving situations.

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
CA CDL Combination Vehicles Practice Test 4 2025
CA commercial driver's license
Based on official CA exam questions
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Authored and fact-checked by Steven Litvintchouk, M.S.

Chief Educational Researcher, Driving‑Tests.org (ACES member)
Last verified for accuracy on
Methodology & Editorial Policy

10 min to complete
Available in EN and ES

What to expect on the actual CA permit test

20

questions

16

correct answers to pass

80%

passing score

More CA CDL test resources

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