The California DMV written test covers traffic laws, road signs, and safe driving practices

The California DMV written knowledge test is a 46-question multiple-choice exam that you take at a DMV office on a computer. You need to answer at least 39 questions correctly to pass — that's about 85 percent. The test covers California traffic laws, road signs, right-of-way rules, and safe driving habits. You get one attempt per visit, and if you don't pass, you can return and take it again on another day.

The test is the same whether you're explore for your first license or renewing after a long gap. If you're under 18, you'll also need to complete a California Driver Education course and a six-month supervised driving period before you can take the test, but the test itself is identical to what adult applicants take.

Key Takeaways

  • You must answer at least 39 out of 46 questions correctly to pass the California DMV written test.
  • The test is taken on a computer at a DMV office and covers traffic laws, road signs, and safe driving rules specific to California.
  • You can take the test in English, Spanish, Mandarin, Cantonese, Vietnamese, or Korean — you choose your language when you book your appointment.
  • If you fail, you can take the test again on a different day; there is no waiting period between attempts.
  • The California DMV Handbook is the official study material, and it covers every topic that appears on the test.

What topics appear on the California test

The test draws from the California Driver Handbook, which the DMV publishes free online and in print. About half the questions focus on traffic laws — speed limits, right-of-way, parking, and what to do at traffic lights and stop signs. Another large section covers road signs and what they mean. The rest covers safe driving practices, such as how to handle bad weather, what to do if your brakes fail, and how alcohol and drugs affect driving.

You'll also see questions about vehicle equipment — things like headlights, mirrors, and seat belts — and a few questions about what to do in an emergency or after an accident. The test does not ask about vehicle maintenance or repair; it focuses on the rules of the road and how to drive safely in California.

How to study for the California DMV test

The California Driver Handbook is your primary study resource. You can read it online at the DMV website, read it as a PDF, or pick up a printed copy at any DMV office. The handbook is organized by topic, so you can study one section at a time. Read through the entire handbook at least once, then go back and focus on the areas where you feel less confident.

Many people find it helpful to use practice tests. The DMV does not publish an official practice test, but several third-party websites offer free California practice tests that follow the same format and cover the same topics. These practice tests let you see what kinds of questions appear and help you get comfortable with the computer-based format. Take a practice test, review the answers you got wrong, and then re-read that section of the handbook.

Study for at least a week or two before your test date. Most people who fail the test did not spend enough time studying the handbook. Focus on understanding the rules, not just memorizing answers — the test questions are worded differently from practice questions, so understanding the concept is more important than memorizing a specific answer.

What happens on test day at the DMV

Arrive at your DMV office at least 15 minutes before your appointment. Bring your learner's permit or ID, and bring any documents the DMV told you to bring when you scheduled your appointment. Check in at the front desk, and a staff member will call you when it's time for your test.

You'll sit at a computer in a private or semi-private testing area. The test administrator will explain how to use the computer and answer any questions about the format. You'll have up to one hour to complete the 46 questions. You can go back and change your answers before you submit the test. Once you submit, the computer will tell you when ready whether you passed or failed and how many questions you got right.

If you pass, you'll move forward in the licensing process — your next step depends on your age and whether you already have a learner's permit. If you fail, you can schedule another test appointment for a different day. There is no waiting period; you can take the test again as soon as the next day if you want to.

Test languages and accommodations

The California DMV offers the written test in six languages: English, Spanish, Mandarin, Cantonese, Vietnamese, and Korean. When you schedule your test appointment online or by phone, you'll select your language. The test content is the same in every language; only the wording changes.

If you have a disability or a medical condition that affects your ability to take the test, you can request accommodations. Common accommodations include extra time, a reader who reads the questions aloud, or a magnifying screen. Contact your local DMV office or call the DMV customer service line to discuss what accommodations you need. You'll need to provide documentation of your condition, and the DMV will work with you to set up an accommodation that works.

What to do if you fail the test

If you don't pass, don't panic — many people fail on their first try. The DMV will give you a score report showing how many questions you got right and which topics gave you trouble. Review that report carefully. Go back to the California Driver Handbook and re-read the sections where you struggled. If a particular topic confused you, read it more slowly and take notes.

Take a practice test again, focusing on the topics where you scored lowest. Some people find it helpful to study with a friend or family member who can quiz them. Others watch YouTube videos that explain California traffic laws — these can help you understand a concept in a different way than reading the handbook.

Schedule your next test appointment as soon as you feel ready. There's no penalty for retaking the test, and you can take it as many times as you need. Most people pass on their second or third attempt.

After you pass the written test

Once you pass the written test, your next step depends on your age and your current license status. If you're 18 or older and explore for your first license, you'll schedule a behind-the-wheel driving test with a DMV examiner. If you're under 18, you must complete a six-month supervised driving period with a licensed adult before you can take the driving test.

The DMV will give you a receipt showing you passed the written test. Keep this receipt — you'll need it when you schedule your driving test. Your passing score is valid for 12 months, so if you're not ready to take the driving test right away, you have time.

Frequently Asked Questions

Can I use my phone or notes during the test?

No. You cannot bring any study materials, phones, or notes into the testing area. The DMV administers the test in a controlled environment to may support fairness. You can only use the computer provided and the test itself.

What happens if I run out of time?

You have up to one hour to complete the 46 questions. Most people finish in 20 to 40 minutes. If you run out of time, the test will submit automatically, and you'll be scored on the questions you answered. Unanswered questions count as wrong.

Do I have to pass the written test before I can take the driving test?

Yes. You must pass the written knowledge test before the DMV will let you schedule a behind-the-wheel driving test. The written test must be passed first, regardless of your age or experience.

How long is my passing score valid?

Your passing score is valid for 12 months from the date you pass. If you don't schedule and complete your driving test within that year, you'll need to take the written test again before you can take the driving test.

Can I retake the test the same day if I fail?

No. You can only take the test once per visit to the DMV. If you fail, you must leave and schedule a new appointment for a different day. You can schedule that appointment right away — there's no waiting period between attempts.