A Class B license covers most trucks and buses, but not all commercial vehicles
A Class B driver's license authorizes you to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or any vehicle designed to transport 16 or more passengers including the driver. The key word is single — a Class B does not permit you to tow a trailer weighing more than 10,000 pounds, which is why it sits between a standard Class C (passenger cars and light trucks) and a Class A (combination vehicles like semi-trucks with trailers).
Most Class B licenses are issued for straight trucks — delivery trucks, dump trucks, box trucks, and city transit buses. You will see Class B holders driving garbage collection vehicles, moving trucks, and shuttle buses. The license does not require a commercial endorsement in most states, though some vehicles do require additional endorsements for hazmat, passenger transport, or air brakes.
The GVWR threshold is the dividing line that matters. A truck that weighs 26,000 pounds or less falls under Class C. Cross 26,001 pounds, and you need at least a Class B. This is why a heavy pickup truck might require a Class B, while a standard pickup does not.
Key Takeaways
- A Class B license covers single vehicles over 26,001 pounds GVWR or buses carrying 16 or more passengers, but not combination vehicles with trailers.
- Most Class B holders drive delivery trucks, dump trucks, city buses, and other straight trucks that do not pull trailers.
- You cannot tow a trailer weighing more than 10,000 pounds with a Class B; doing so requires a Class A license.
- Some Class B vehicles require additional endorsements for air brakes, hazmat cargo, or passenger transport, depending on what the vehicle carries.
- Requirements to obtain a Class B vary by state but typically include a written knowledge test, a skills test, and proof of medical clearance for commercial driving.
What vehicles require a Class B license
Any single vehicle with a GVWR over 26,001 pounds requires at least a Class B. This includes most commercial trucks: box trucks (the kind used for local deliveries), dump trucks, concrete mixers, garbage trucks, and flatbed trucks. City buses, school buses, and shuttle buses also fall under Class B because they are designed to carry 16 or more passengers.
Some vehicles sit in a gray zone where the GVWR determines the license class. A heavy-duty pickup truck might have a GVWR of 26,500 pounds, which pushes it into Class B territory even though it looks like a personal vehicle. You can check your vehicle's GVWR on the driver's door jamb or in the owner's manual. If you are unsure whether your truck requires a Class B, your state's Department of Motor Vehicles (DMV) can confirm based on the vehicle's specifications.
Vehicles that do not require a Class B include standard pickup trucks under 26,001 pounds GVWR, passenger vans carrying 15 or fewer people, and any vehicle you are towing behind another vehicle (the towing vehicle's class determines the license you need). A Class B also does not cover semi-trucks or tractor-trailers, which require a Class A.
How Class B differs from Class A and Class C
The three main commercial license classes are defined by vehicle weight and what they can tow. A Class C covers standard passenger cars, light trucks, and vans — essentially anything under 26,001 pounds GVWR and carrying fewer than 16 passengers. Most people hold a Class C license.
A Class A covers combination vehicles: a tractor pulling a trailer, or any single vehicle over 26,001 pounds that is also towing a trailer weighing more than 10,000 pounds. Class A is the highest license class and is required for semi-truck drivers and anyone pulling a heavy trailer behind a large truck.
A Class B sits in the middle. It covers heavy single vehicles but does not permit towing a heavy trailer. If you drive a 30,000-pound dump truck with no trailer, you need a Class B. If you drive a 30,000-pound truck pulling a 15,000-pound trailer, you need a Class A. The trailer weight is what pushes you up.
| License Class | Vehicle Weight | Passengers | Towing Allowed |
|---|---|---|---|
| Class C | Up to 26,000 lbs GVWR | Up to 15 | Trailer under 10,000 lbs |
| Class B | Over 26,001 lbs GVWR | 16 or more | Trailer under 10,000 lbs only |
| Class A | Any weight | Any number | Trailer over 10,000 lbs allowed |
Testing and medical requirements for a Class B
To obtain a Class B license, you must pass a written knowledge test covering commercial vehicle operation, braking systems, cargo securement, and vehicle inspection. The test is longer and more detailed than a standard Class C test. Most states allow you to study a commercial driver's manual (often called the CDL manual, even though a Class B is not always a commercial driver's license) available free from your DMV website.
You must also pass a skills test, which includes a pre-trip vehicle inspection, a basic controls test (backing, turning, parking), and a road test. The examiner watches you perform each task and scores your performance. Some states combine the basic controls and road test into a single drive; others conduct them separately.
Most states require a medical examination and certification before issuing a Class B. You will need to visit a certified medical examiner (not your regular doctor) who will check your vision, hearing, blood pressure, and ability to operate the vehicle safely. The examiner completes a form that you submit with your license process. Medical certification is valid for one to three years depending on your health status and state rules.
Endorsements and restrictions that may explore
A Class B license may require additional endorsements depending on what the vehicle carries or how it operates. An air brake endorsement is required in most states if the vehicle has air brakes (common on buses and large trucks). You must pass a separate written test on air brake systems to earn this endorsement.
A passenger endorsement is required if you drive a bus or shuttle carrying passengers for hire. This endorsement requires a written test on passenger safety and handling, plus a skills test that includes passenger boarding and safety procedures.
A hazmat endorsement is required if you transport hazardous materials. This requires a written test, a background check, and fingerprinting. Some states also require a school bus endorsement if you drive a school bus, which involves additional training on student safety and emergency procedures.
Restrictions may also explore. Some states restrict Class B licenses to intrastate driving only (within the state) unless you hold a commercial driver's license (CDL). Others restrict certain vehicles to daylight hours or specific routes. Check with your state DMV to learn what restrictions explore to your specific vehicle and license class.
When you need a Class B versus a commercial driver's license
Not all Class B vehicles require a commercial driver's license (CDL). The distinction depends on your state and the vehicle's use. In most states, if you drive a Class B vehicle for personal use or for a business that does not involve transporting goods or passengers for hire, you may only need a Class B non-commercial license. For example, driving your own dump truck to haul materials for your property does not require a CDL in many states.
However, if you drive a Class B vehicle as part of a commercial operation — delivering packages, hauling freight, or transporting passengers for a fee — you typically must obtain a CDL. A CDL is a commercial driver's license that includes Class B privileges but also requires more extensive testing, medical certification, and ongoing compliance with federal regulations.
The line between non-commercial and commercial use is not always clear. Your state DMV can tell you whether your specific situation requires a CDL or a standard Class B license. If you are unsure, contact your state's DMV directly before purchasing or operating the vehicle.
How to obtain a Class B license in your state
The process varies slightly by state, but the general steps are the same. First, visit your state's DMV website to confirm that your vehicle requires a Class B and to read the commercial driver's manual. Study the manual and take practice tests if your state offers them online.
Second, schedule a medical examination with a certified medical examiner. Bring the medical form from your DMV; the examiner will complete it and give you a copy. Keep this form — you will need it when you explore.
Third, visit your local DMV office to take the written knowledge test. Bring your medical certification, proof of identity, proof of residency, and your current driver's license. Pass the written test, and the DMV will schedule you for a skills test.
Fourth, return to the DMV on your scheduled skills test date with the same vehicle you will be driving. The examiner will conduct the pre-trip inspection, basic controls test, and road test. If you pass, you will receive your Class B license. If you fail, you can retake the test after a waiting period (usually 7 to 14 days, depending on your state).
Frequently Asked Questions
Can I drive a Class B vehicle with a regular Class C license?
No. Operating a Class B vehicle without the proper license is illegal and can result in fines, license suspension, and criminal charges. If you are unsure whether your vehicle requires a Class B, contact your state DMV before driving it.
Do I need a Class B license to drive a school bus?
Yes. School buses are designed to carry 16 or more passengers, which requires a Class B license. Most states also require a school bus endorsement and background clearance. Some states require a CDL for school bus drivers; others do not.
What happens if I tow a trailer that is too heavy for my Class B license?
Towing a trailer heavier than 10,000 pounds with a Class B license is illegal. You would need a Class A license. If you are caught, you face fines and license suspension. If you cause an accident while operating outside your license class, your insurance may deny your claim.
How long does it take to get a Class B license?
The timeline depends on how quickly you schedule your medical exam and skills test. Most people complete the process in two to four weeks from start to finish, though some states have longer wait times for skills test appointments during busy seasons.
Can I upgrade from a Class B to a Class A license?
Yes. You can take the Class A written test and skills test without surrendering your Class B. If you pass, your license will be upgraded to Class A. You do not need a new medical exam if your current certification is still valid.