What a Class B License Lets You Drive
A Class B license authorizes you to drive single vehicles weighing more than 26,001 pounds — typically large trucks, buses, and some RVs. The exact weight threshold and vehicle types vary by state, but the core distinction is that Class B covers heavier vehicles than a standard Class C (passenger car) license, but does not require the air brake certification that a Class A license demands.
Some states call this license a "Class 2" or use different naming altogether. Check your state's Department of Motor Vehicles website to confirm the exact vehicle categories your state's Class B covers, because the rules differ significantly between states.
You will need a Class B license if you drive a dump truck, cement mixer, large delivery truck, or a bus carrying passengers. If you drive a vehicle that falls into this weight range commercially, your employer will usually tell you what license class you need.
Key Takeaways
- A Class B license covers single vehicles over 26,001 pounds in most states, but weight thresholds and vehicle types vary by state.
- You must pass a written knowledge test, a skills driving test, and a medical examination before you can obtain a Class B license.
- Most states require you to hold a valid Class C license for a set period (often 6 months to 1 year) before you can test for Class B.
- The written test covers vehicle operation, safety, and weight-related handling specific to larger trucks and buses.
- Testing fees and processing times vary by state but typically range from several weeks to a few months.
Prerequisites Before You Test
Before you can test for a Class B license, most states require you to hold a valid Class C driver's license for a minimum period. This waiting period is commonly 6 months to 1 year, though some states have no waiting period at all. Check your state's DMV website to confirm the exact requirement.
You must also be at least 18 years old in most states, though some states set the minimum at 21 for commercial Class B licenses. If you are under 18, your state may allow you to obtain a Class B for non-commercial driving (such as operating a personal RV), but the rules differ.
Your Class C license must be in good standing — no active suspensions, revocations, or disqualifications. If your license has been suspended or revoked, you will need to complete the reinstatement process before you can move forward with a Class B test.
The Written Knowledge Test
The Class B written test covers vehicle operation, safety procedures, and handling techniques specific to larger trucks and buses. You will answer questions about braking systems, load distribution, turning radius, backing up safely, and how weight affects acceleration and stopping distance.
Most states allow you to study using the official DMV handbook for Class B vehicles, which is available free on your state's DMV website or in print at your local DMV office. Some states also offer practice tests online so you can gauge your readiness before scheduling the actual exam.
The test is typically 50 to 100 questions, and you must score at least 80 percent correct to pass. You usually get one or two attempts per visit, and if you fail, you can retake it after a waiting period (often 1 to 7 days, depending on your state).
The Behind-the-Wheel Driving Test
After you pass the written test, you must schedule and pass a skills driving test with a DMV examiner. This test takes place in an actual Class B vehicle — you cannot use your personal car. Most testing centers have vehicles available, but some states require you to bring your own or arrange one through a commercial driving school.
The examiner will observe your ability to start, accelerate, brake, turn, back up, and park the vehicle safely. You will also demonstrate knowledge of mirrors, blind spots, and how the vehicle's weight affects handling. The test typically lasts 30 to 60 minutes and covers both city driving and highway conditions.
You must follow all traffic laws during the test. Any moving violation, unsafe maneuver, or failure to demonstrate control of the vehicle will result in an automatic fail. Most states allow you to retake the driving test after a waiting period if you do not pass on your first attempt.
Medical Examination Requirements
Many states require a medical examination before issuing a Class B license, particularly if you plan to drive commercially. This exam is performed by a state-certified medical examiner and checks your vision, hearing, blood pressure, and overall physical ability to operate a large vehicle safely.
You will need to pass a vision test (usually 20/40 or better with or without correction) and demonstrate adequate hearing. The examiner will also review your medical history for conditions that could affect your ability to drive safely, such as seizure disorders, diabetes, or heart conditions.
The cost of the medical exam varies by state and examiner, typically ranging from $50 to $150. Some states include this exam as part of the DMV testing process, while others require you to schedule it separately with a certified examiner and bring the results to the DMV.
Fees and Processing Timeline
Class B license fees vary significantly by state. Testing fees typically range from $25 to $100, and the license itself costs between $30 and $150 for a standard validity period (usually 4 to 8 years). Some states charge additional fees for the medical examination or for retaking tests.
Processing time from process to receiving your license usually takes 2 to 8 weeks, depending on how quickly you schedule and pass your tests and how busy your local DMV is. If you need to retake either the written or driving test, add another 1 to 2 weeks per attempt.
Contact your state's DMV directly or visit their website to confirm the exact fees in your state and to check current wait times for testing appointments. Some states allow you to schedule tests online, while others require you to visit in person or call.
Using a Commercial Driving School
Many people obtain a Class B license through a commercial driving school rather than studying and testing independently. These schools provide classroom instruction, hands-on training in actual Class B vehicles, and help you schedule DMV tests.
A commercial driving school course typically takes 3 to 6 weeks and costs between $1,000 and $3,000, depending on the school and the depth of training. The school will prepare you for both the written and driving tests and often has relationships with local DMV examiners, which can speed up scheduling.
Using a school is optional — you can study independently and test through the DMV — but many people find the structured training and hands-on practice valuable, especially if they have no prior experience with large vehicles. If your employer requires a Class B license, they may cover part or all of the school costs.
Frequently Asked Questions
Can I get a Class B license if I have had traffic violations?
Traffic violations do not automatically disqualify you, but serious violations (like DUI or reckless driving) may prevent you from obtaining a Class B license. Check with your state's DMV about your specific violations, as the rules vary. Some states have a waiting period after certain violations before you can test.
What happens if I fail the driving test?
You can retake the driving test after a waiting period, usually 1 to 7 days depending on your state. Most states allow unlimited retakes, though some charge a fee each time. You do not need to retake the written test if you already passed it, as written test results typically remain valid for 6 months to 1 year.
Do I need to take a Class B test if I already have a Class A license?
No. A Class A license (which covers vehicles over 26,001 pounds with air brakes) automatically includes the authority to drive Class B vehicles. You do not need to test again or obtain a separate license.
Can I use my personal truck for the driving test?
Only if it meets your state's Class B weight and configuration requirements and is registered and insured. Most DMV testing centers provide vehicles, but some states allow you to bring your own. Contact your local DMV to confirm what vehicles are acceptable for testing in your area.
How long is a Class B license valid?
Most states issue Class B licenses valid for 4 to 8 years, the same as a standard Class C license. You will need to renew it before it expires by visiting the DMV, paying a renewal fee, and passing a vision test. Some states require a new medical examination at renewal time.