A Class B license covers most medium-duty trucks and larger vehicles
A Class B driver's license is a commercial license that lets you operate single vehicles with a gross vehicle weight rating (GVWR) between 26,001 and 33,000 pounds. The key word is "single" — a Class B does not allow you to tow a trailer, which is why it sits between a regular Class C license (for personal vehicles under 26,000 pounds) and a Class A license (for tractor-trailers and combinations).
The exact vehicles you can drive depend on your state, but Class B typically covers delivery trucks, dump trucks, box trucks, city buses, and straight trucks used for commercial hauling. If you drive a vehicle for work and it falls into this weight range, you will need a Class B rather than a regular license.
Getting a Class B requires passing a written knowledge test, a skills test (usually a road test), and a medical examination. You must also pass a background check. The process takes longer than renewing a regular license because the testing is more involved, and the medical exam is mandatory.
Key Takeaways
- A Class B license covers single vehicles weighing 26,001 to 33,000 pounds, but does not allow towing a trailer.
- You need a Class B to drive delivery trucks, dump trucks, box trucks, city buses, and similar commercial vehicles for work.
- The written test, road test, and medical exam are all required, and you must pass a background check before the license is issued.
- Renewal periods and testing requirements vary by state, so check your state's Department of Motor Vehicles for specific rules.
- If you need to tow a trailer, you will need a Class A license instead, which has additional requirements.
Weight ratings and what vehicles fall into Class B
The dividing line between a regular license and a Class B is the GVWR — the maximum weight the vehicle can safely carry when fully loaded. A vehicle with a GVWR of 26,001 pounds or higher requires a commercial license. Most personal pickup trucks and SUVs stay under 26,000 pounds, so they do not require a commercial license even if you use them for work occasionally.
Common Class B vehicles include straight trucks (box trucks, delivery trucks, dump trucks), city transit buses, and some larger commercial vans. A 26-foot moving truck often falls into Class B territory, as do many delivery vehicles used by shipping companies and contractors. If you are unsure whether a specific vehicle requires a Class B, check the door jamb or registration — the GVWR is listed there.
The weight limit matters because heavier vehicles require more training to operate safely. Braking distance, turning radius, and visibility all change with weight, which is why the testing is more rigorous than for a regular license.
Written test and knowledge requirements
The written test for a Class B license covers commercial driving rules, vehicle inspection procedures, and safety practices specific to larger vehicles. You will answer questions about air brakes (if the vehicle has them), cargo securement, hours-of-service rules, and hazardous materials (if you plan to transport them). The test is longer than a regular license test — typically 50 to 100 questions depending on your state.
Most states allow you to study using the official CDL (Commercial Driver's License) manual, which is free and available online through your state's Department of Motor Vehicles. Some states offer practice tests online as well. You must pass the written test before you can schedule the road test.
If you fail the written test, you can retake it, but the number of attempts allowed and the waiting period between attempts vary by state. Some states let you retake it the same day; others require a waiting period of several days.
Road test and behind-the-wheel evaluation
The road test for a Class B license is more detailed than a regular driving test. An examiner will watch you perform a pre-trip vehicle inspection, demonstrating that you can identify working brakes, lights, mirrors, and other safety equipment. You will then drive the actual vehicle on public roads while the examiner scores your handling of turns, stops, backing, and lane changes.
The test usually lasts 30 to 45 minutes and covers both city driving and highway driving. You must bring the vehicle you plan to use for work — you cannot use a different vehicle for the test. The vehicle must be in safe working condition and display valid registration and insurance.
If you fail the road test, you can retake it after a waiting period that varies by state. Some states require you to wait a few days; others allow when ready retesting. You will need to pay the testing fee again.
Medical examination and background check requirements
All commercial driver's license applicants must pass a medical examination performed by a certified medical examiner. The exam checks your vision, hearing, blood pressure, and overall health. You will also be asked about any medications you take and any medical conditions that might affect your ability to drive safely.
The medical examiner will issue a Medical Certificate (also called a Medical Card or Form MCSA-5875) if you pass. This certificate is valid for two years and must be renewed before it expires. If you fail the medical exam, you can retake it with a different examiner, but you cannot get a Class B license without passing.
A background check is also required. The state will review your driving record for violations, accidents, and suspensions. If you have serious violations or a suspended license, you may be denied a Class B license. Some states also check for criminal history, though the specific crimes that disqualify you vary.
Differences between Class A, B, and C licenses
The main difference between Class B and Class A is towing. A Class A license allows you to operate any single vehicle or combination of vehicles (like a tractor-trailer), while a Class B covers only single vehicles without a trailer. If your job requires towing, you need a Class A, not a Class B.
A regular Class C license covers personal vehicles under 26,000 pounds and does not require the written test, road test, or medical exam that a Class B does. You can drive a Class C vehicle for work, but only if it stays under the weight limit. Many small business owners use personal vehicles for work and never need a commercial license.
Some states also have a Class D license for certain vehicles like motorcycles or mopeds, but this is separate from the truck and bus classifications. The chart below shows the basic breakdown:
| License Class | Vehicle Type | GVWR Limit | Towing Allowed | Medical Exam Required |
|---|---|---|---|---|
| Class C (Regular) | Personal vehicles, small trucks | Under 26,001 lbs | Limited (varies by state) | No |
| Class B | Delivery trucks, buses, dump trucks | 26,001–33,000 lbs | No | Yes |
| Class A | Tractor-trailers, any combination | Over 33,000 lbs | Yes | Yes |
Renewal and ongoing requirements
A Class B license is typically valid for four to eight years, depending on your state. When it expires, you must renew it by passing the medical exam again and paying the renewal fee. Some states require you to retake the written test and road test at renewal; others do not.
You must also maintain a clean driving record. Serious violations like DUI, reckless driving, or at-fault accidents can result in suspension or revocation of your commercial license. The penalties for commercial violations are often stricter than for regular license violations.
If you move to a different state, you will need to transfer your license to that state's system. Most states recognize out-of-state commercial licenses for a limited time, but you must convert it to a local license within a set period (usually 30 to 60 days).
Frequently Asked Questions
Do I need a Class B license to drive a pickup truck for work?
Only if the truck's GVWR is 26,001 pounds or higher. Most personal pickup trucks stay under this limit, so you can drive them with a regular license. Check the door jamb or registration to find the GVWR. If it is under 26,001 pounds, a regular license is fine.
Can I get a Class B license if I have a DUI on my record?
It depends on how recent the DUI is and your state's rules. Most states will not issue a commercial license if you have a DUI within the past five to ten years. Some states have a permanent ban. Contact your state's Department of Motor Vehicles to find out whether your record disqualifies you.
What happens if I drive a Class B vehicle without a Class B license?
You can face a fine, points on your license, and possible criminal charges depending on your state. Insurance may also deny a claim if you were driving without the proper license. It is worth getting the license before you start the job.
How long does it take to get a Class B license?
The process usually takes two to four weeks from start to finish, but it varies by state and how quickly you schedule your tests. The written test can often be taken within days, but the road test may have a longer wait depending on demand at your local DMV.
Do I need a Class B license to drive a school bus?
Yes, most states require a Class B or Class A license to drive a school bus. You will also need a School Bus Endorsement (S endorsement), which requires an additional written test and background check. Some states have specific training requirements for school bus drivers as well.