CA CDL General Knowledge Exam Simulator 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Based on 2025 CA commercial driver's license manual
Triple-checked for accuracy
Updated for March 2025

California has some unique driving conditions that challenge even the most experienced drivers. Along the Pacific Coast, dense fog often covers highways like U.S. Highway 101, reducing visibility and requiring caution. In areas like Death Valley, extreme temperatures can severely affect your health and your vehicle’s performance. To handle these conditions, you should carry extra water and check your vehicle’s coolant levels and tire pressures before starting your shift.
Commercial driving in California will open up a new world for you, one that has plenty of opportunities. Whether you’re just getting started or considering a new career, deciding to obtain a Commercial Driver’s License (CDL) will greatly benefit your future.
The California DMV requires all applicants to pass a vision test and knowledge exam before they can obtain a Commercial Learner’s Permit (CLP). You must also pay the application fee and submit the required documents. There are 50 multiple-choice questions on the official CDL general knowledge test, and they are all based on the official California commercial driver handbook (California CDL Handbook 2025). To pass this exam on your first attempt, you should practice with our California CDL general knowledge exam simulator. It mirrors the official test format, so you’ll know what to expect on exam day. You must answer 50 questions on the various aspects of commercial driving and score at least 80% to pass.
This intuitive tool can be accessed from anywhere in the world. All you need is a device that supports a browser and has a stable internet connection. It can fit the schedule of even the busiest students, providing flexibility and making study sessions more enjoyable. By practicing with our California CDL general knowledge exam simulator, you’re not just preparing for the official exam—you’re setting yourself up for success in your commercial driving career. There are no shortcuts to your learning phase, but you can significantly shorten the time it takes to gain the knowledge and build the confidence necessary to begin a career on California’s roads.

5 min to complete

Available in EN and ES

This test is a Premium member exclusive. You'll get:

All 650 exam-like questions
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Unique 360° Virtual Road
Simulations

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What to expect on the actual CA DMV exam

questions

correct answers to pass

80%

passing score

Helpful links

CA DMV website

Official California CDL manual (2025)

More CA DMV Written Exam Resources

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Written by Andrei Zakhareuski Updated over a week ago

At Driving-Tests.org, we understand the importance of reliable and accurate practice tests to help you prepare for your DMV exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.

Here's an inside look at how we maintain the highest quality in our practice tests.

Content Creation and Verification Process

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Every question we develop is based on the most recent version of each state's official driving manual. Our team regularly monitors each state DMV's website for the latest updates to ensure our practice tests are always aligned with the most current information.
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We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation.
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Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your DMV exam.

CA CDL General Knowledge Exam Simulator

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