The Class B Test Covers Road Rules, Signs, and Safe Driving
The DMV Class B written test measures whether you know the traffic laws and road signs you need to drive safely in your state. The test is multiple choice, taken on a computer at most DMV offices, and covers material from your state's driver manual. You will see questions about speed limits, right-of-way rules, parking, following distance, what different road signs mean, and how to handle emergency situations on the road.
The number of questions varies by state — some give 30 questions, others give 50 or more. You typically need to answer 80 percent of the questions correctly to pass. The test takes between 10 and 20 minutes for most people. You can usually retake the test the same day if you fail, though some states require you to wait a few hours or come back another day.
Key Takeaways
- The Class B test is a multiple-choice computer test based on your state's driver manual, covering road rules, signs, and safe driving practices.
- Most states require you to score 80 percent or higher to pass, though the exact passing score varies by state.
- You should study your state's driver manual before the test, as the questions come directly from that material.
- Bring your current ID and any documents the DMV told you to bring when you scheduled your test appointment.
- If you fail, you can usually retake the test the same day or within a few days, depending on your state's rules.
What the Test Actually Covers
Your state's driver manual is the source for every question on the Class B test. The manual covers traffic laws specific to your state, so a question about speed limits in a school zone or how to handle a four-way stop will reflect your state's actual rules, not general driving knowledge.
Common topics include: right-of-way rules (who goes first at intersections and in different situations), speed limits and when they change, following distance between vehicles, parking rules and where you cannot park, what to do at traffic signals and stop signs, what different road signs mean, how to handle skids or brake failure, rules about passing other vehicles, and what to do if you are pulled over by police. Some states also ask about seat belt laws, distracted driving, and impaired driving.
The test does not cover how to actually operate the vehicle — that is the road test. It also does not ask about your personal driving history or medical conditions. It is purely about the rules and signs you will encounter on public roads.
How to Study Before Test Day
Start with your state's official driver manual. Most DMV websites let you read it free as a PDF or order a printed copy. Read through the entire manual at least once, even sections that seem obvious. The test often includes details that drivers overlook — like the exact distance you must stay behind a truck, or the specific hand signals for turns.
After reading the manual, use practice tests. Many state DMV websites offer free practice tests online that use the same format and question types as the real test. Take these tests multiple times until you consistently score above 85 percent. Practice tests show you which topics you need to review more carefully. If you miss questions about parking or right-of-way, go back to those sections in the manual and read them again.
Study in short sessions over several days rather than cramming the night before. Spacing out your study helps the information stick. Focus on the topics that trip you up, not the ones you already know. On the day before your test, review your practice test results and the manual sections where you scored lowest.
What to Bring and How the Test Works
Bring your current state ID or passport. You will also need to bring any documents the DMV told you to bring when you scheduled your appointment — this might include proof of residency, your Social Security number, or other identification depending on your state and whether you are a new driver or renewing.
When you arrive at the DMV, check in at the front desk. A staff member will verify your identity and documents, then direct you to a computer station. You will sit at a private computer terminal and take the test on screen. The computer will show you one question at a time. You select your answer by clicking on it, and the computer moves to the next question. You cannot go back to change an answer once you move forward, so read each question carefully before you click.
The computer will tell you when ready whether you passed or failed. If you pass, you will get a receipt showing your score and your next steps for the road test. If you fail, ask the DMV staff what the retake policy is in your state — some let you test again the same day, others require you to wait 24 hours or schedule a new appointment.
Common Mistakes That Cost People Points
The most common mistake is not reading the driver manual before the test. People often assume they know the rules from driving experience, but the test asks about specific details in your state's laws. For example, you might know to stop at a red light, but the test might ask the exact distance you must stop from the crosswalk, and the answer is in the manual.
Another frequent error is misunderstanding right-of-way questions. These questions have many variations — right-of-way at a four-way stop, at a two-way stop, when turning left, when entering a highway, when a traffic signal is broken. Each situation has a specific rule. Read the manual's section on right-of-way carefully and understand the logic, not just memorize answers.
People also lose points by rushing through practice tests. If you take a practice test quickly without thinking, you will not learn from it. Take practice tests at the same pace you will take the real test, read every word of each question, and think about why each answer is right or wrong.
If You Fail the First Time
Failing the Class B test does not prevent you from getting your license — it just means you need to take the test again. Most states let you retake it within a few days. Some charge a small fee for each retake, while others do not.
After you fail, ask the DMV staff which topics gave you the most trouble. Review those sections in the driver manual and take practice tests focused on those areas. Do not retake the test until you are scoring consistently above 85 percent on practice tests. Taking the test again too soon usually results in another failure and wastes time and money.
If you are struggling with the test after multiple attempts, some DMV offices offer study sessions or can direct you to resources. You can also ask a friend or family member to quiz you on the manual, or look for online study groups for your state's test.
Frequently Asked Questions
How many questions are on the Class B test?
The number varies by state. Most states give between 30 and 50 questions. Your state's DMV website will tell you the exact number for your test. Practice tests from your state's DMV will show you the same format and question count as the real test.
What score do I need to pass?
Most states require 80 percent correct to pass. Some states use 75 percent or 85 percent. Check your state's DMV website or call your local DMV office to confirm the passing score for your state.
Can I use my phone or notes during the test?
No. The test is proctored, meaning a DMV staff member watches to make sure you do not use outside materials. You cannot bring your phone, the driver manual, or any notes into the testing area. You take the test based on what you studied beforehand.
How long is the Class B test?
Most people finish between 10 and 20 minutes. The test has no time limit — you can take as long as you need to answer all the questions. However, you cannot go back to change answers once you move forward, so you cannot use extra time to review.
Do I have to pass the written test before I take the road test?
Yes. You must pass the Class B written test before you can schedule or take the road test. The written test comes first. Once you pass, you will get a receipt or permit that allows you to book your road test appointment.