What the California DMV knowledge test covers and how it works
California's knowledge test is a written exam you take at a DMV office to show you understand traffic laws, road signs, and safe driving practices. The test has 36 questions, and you must answer at least 30 correctly to pass. You answer questions on a computer terminal at the DMV, and you get your result when ready after you finish.
The test covers California's Driver Handbook, which the DMV publishes free online and in print. Questions ask about right-of-way rules, speed limits, parking laws, what different road signs mean, how to handle emergencies, and what to do at traffic lights and stop signs. The test is in English, though interpreters are available if you need one.
You take the knowledge test before you take the behind-the-wheel driving test. Once you pass the knowledge test, the DMV issues you a permit that lets you practice driving with a licensed adult in the car. You must hold that permit for at least six months before you can take the driving test, though some people wait longer.
Key Takeaways
- The knowledge test has 36 questions about California traffic laws and road signs, and you need 30 correct answers to pass.
- You take the test on a computer at a DMV office and receive your result the same day.
- The test covers only material in the California Driver Handbook, which you can read free online or pick up at any DMV office.
- Passing the knowledge test gives you a permit to practice driving, but you must wait at least six months before you can take the driving test.
- You can retake the knowledge test if you fail, though you must wait at least one day before your next attempt.
How to prepare for the knowledge test
The California Driver Handbook is the only material you need to study. You can read it as a PDF from the DMV website, order a printed copy by mail, or pick one up in person at any DMV office. The handbook is organized by topic — parking, right-of-way, speed limits, and so on — so you can study the sections that matter most to you first.
Many people study the handbook once and then take practice tests online. The DMV does not publish an official practice test, but several third-party websites offer free practice questions that follow the same format and cover the same topics. These are useful because they let you see how questions are worded and what kinds of mistakes people commonly make.
Study the handbook at least a few days before your test date. If you are a slower reader or English is not your first language, give yourself a week or two. The handbook is not long — most people can read it in a few hours — but understanding the material takes longer than reading it.
When you can take the knowledge test
You must be at least 15 years and 6 months old to take the knowledge test in California. You also need a valid form of identification — a passport, birth certificate, or state ID card — and proof of your Social Security number or an Individual Taxpayer Identification Number. Bring originals, not copies.
You do not need to schedule an appointment at most DMV offices, though some offices now use an online appointment system. Check your local DMV office's website to see whether appointments are required or recommended. If appointments are not required, arrive early in the morning, because offices get busy in the afternoon.
The knowledge test is offered during all DMV business hours. Most offices are open Monday through Friday, though some are open on Saturday mornings. A few offices are open on Sunday. Check your local office's hours before you go.
What to bring and what happens on test day
Bring a valid form of identification and proof of your Social Security number or ITIN. The DMV accepts a passport, birth certificate, state ID card, or driver's license from another state. For proof of Social Security number, bring your Social Security card, a tax return, a W-2 form, or a 1099 form. Bring originals — photocopies are not accepted.
When you arrive at the DMV, tell the staff member at the counter that you are there to take the knowledge test. They will check your documents, take a photo of you, and give you a number to call when it is your turn. When your number is called, a staff member will take you to a computer terminal and explain how to use it. You will have as much time as you need to answer the 36 questions.
You cannot bring notes, phones, or any other materials into the testing area. You also cannot ask the staff member questions about the test itself — they can only explain how to use the computer. Once you submit your answers, the computer tells you whether you passed or failed and shows you which questions you got wrong.
What happens if you fail the knowledge test
If you do not get 30 questions correct, you fail and must retake the test. You can take the test again the next day — there is no waiting period between attempts. However, you must pay the test fee again each time you take it. The fee is the same whether you pass or fail.
Before you retake the test, review the questions you got wrong. The DMV staff member can show you which ones you missed, and you can look up those topics in the Driver Handbook. Many people find it helpful to study those specific sections rather than reading the whole handbook again.
Most people pass on their first or second attempt. If you fail multiple times, consider studying with someone else or asking a friend to quiz you on the material. Sometimes hearing the material explained in a different way makes it click.
Knowledge test fees and what comes next
The knowledge test fee is included in the permit fee. When you pass the knowledge test, you pay a single fee that covers both the test and your permit. The fee varies depending on your age — it is lower for people under 18 — but as of 2024 it ranges from about $35 to $40. Fees change periodically, so check the DMV website for the current amount.
Once you pass, the DMV issues you a permit that is valid for 12 months. You can practice driving with a licensed adult who is at least 25 years old and holds a valid driver's license. The adult must sit in the front passenger seat next to you.
You must hold your permit for at least six months before you can take the behind-the-wheel driving test. Some people wait longer — there is no maximum time you can hold a permit. When you are ready to take the driving test, you schedule an appointment at a DMV office and bring your permit, your identification, and the vehicle you will drive during the test.
Special circumstances and accommodations
If you are deaf or hard of hearing, you can request an interpreter at no cost. If you have a visual impairment, the DMV can provide a reader or enlarge the text on the computer screen. If you have a learning disability or other condition that affects how you take tests, contact your local DMV office ahead of time to discuss what accommodations are available.
If English is not your first language, you can take the test in Spanish, Mandarin, Cantonese, Vietnamese, Korean, or Tagalog. You request the language when you arrive at the DMV. The DMV also offers the Driver Handbook in these languages, so you can study in the language you are most comfortable with.
If you are taking the test as a minor, you do not need a parent or guardian present. However, you do need valid identification and proof of your Social Security number, just like an adult would.
Frequently Asked Questions
How many times can I take the knowledge test?
You can retake the test as many times as you need to pass. There is no limit on the number of attempts. You must wait at least one day between attempts and pay the fee each time you take the test.
Can I take the knowledge test online or by mail?
No. The knowledge test must be taken in person at a DMV office on a computer terminal. You cannot take it online, by mail, or over the phone.
What if I fail the knowledge test — do I lose my permit?
You do not get a permit until you pass the knowledge test. If you fail, you straightforward do not receive a permit yet. You can retake the test the next day and get your permit once you pass.
Do I need to study the entire Driver Handbook or just certain sections?
The test questions come from the entire handbook, so you should study all of it. However, if you are short on time, focus on the sections about right-of-way, speed limits, traffic signs, and parking — these topics appear on most tests.
What if I do not understand a question on the test?
You can raise your hand and ask a DMV staff member to explain how to use the computer, but they cannot explain what a question means or help you answer it. Read the question carefully and choose the best answer you can.