PassMyDMV

California CDL Practice Test

Free practice questions for the California commercial driver license written exams — general knowledge, air brakes, combination vehicles, and every endorsement.

California's DMV written test is designed to ensure that all new drivers have a solid understanding of traffic laws, road signs, and safe driving practices before obtaining their learner's permit. California offers permits for standard cars and motorcycles, as well as commercial driver licenses for professional drivers. The test is comprehensive and practical, covering the essential knowledge every driver needs to stay safe and follow California's traffic laws. All practice questions on PassMyDMV are drawn from the official California Driver Handbook and California Motorcycle Handbook, so you're studying the exact material the California DMV uses to create its written tests.

About this section of the California test

California's commercial driver license program requires applicants to pass the general knowledge test plus additional tests for specific endorsements as needed. All CDL applicants must take the general knowledge test and pass tests for any endorsements they're seeking. Available endorsements include Hazmat (H), Passenger (P), School Bus (S), Tank Vehicles (N), Doubles/Triples (T), Air Brakes, and Combination Vehicles. Each endorsement test focuses on specialized knowledge needed to safely operate that type of vehicle. All knowledge tests required by the California DMV must be taken using the Automated Knowledge Testing equipment (AKTE).

Start practicing

Open the California practice test — pick car, motorcycle, or CDL, then drill quick quizzes or full simulated exams.

Read the source manual

Browse the official California driver manual — every practice question deep-links to the page that explains the rule.

Frequently asked questions

How many questions are on the California permit test?
For applicants under 18, the test has 46 multiple-choice questions. For applicants 18 and older, the test has 36 questions.
What's the passing score for the California written test?
You must answer at least 38 out of 46 questions correctly (83%) if you're under 18. If you're 18 or older, you must answer at least 30 out of 36 questions correctly (83%).
How much does the California written knowledge test cost?
The application fee is $38, which is valid for 12 months and covers your permit, up to three knowledge test attempts, and your driving test.
How old do I have to be to take the California permit test?
You must be at least 15.5 years old to apply for a California learner's permit.
Can I take the California DMV test in Spanish or other languages?
Yes, California's written test is available in 35 languages including English, Spanish, Chinese, Vietnamese, Korean, Tagalog, Russian, Armenian, Hindi, Punjabi, and many others. Translations and interpreter services are also available.
How many times can I retake the California written test?
Your $38 application fee covers up to three attempts to pass the test within 12 months. If you fail as a minor (under 18), you must wait seven days before retaking. If you're 18 or older, you can retake after the next business day. If you fail all three times, you must reapply and pay the $38 fee again.
Is the California permit test online or in person?
California's written permit test is administered in person at California DMV offices. However, some DMV services can be completed online through the MyDMV portal.
What documents do I need to bring to the California DMV?
You'll typically need a valid form of identification, proof of California residency, and your Social Security number. Specific document requirements may vary, so check the California DMV website (dmv.ca.gov) for detailed information based on your individual situation.

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