The six main license classes and what they let you drive
Every state issues driver's licenses in classes, and the class printed on yours determines what vehicles you're legally allowed to operate. The most common classes are Class D (standard passenger cars), Class C (light trucks and vans), Class B (medium trucks), and Class A (heavy trucks). Two additional classes—Class M for motorcycles and Class DJ for drivers under 18—exist in most states but vary slightly by location.
The class system exists because different vehicles require different skills and pose different risks. A car handles nothing like a 40-ton semi, and a motorcycle requires training a four-wheel driver may never receive. Your license class is the state's way of saying you've demonstrated you can operate that specific category safely.
The class you need depends entirely on what you plan to drive. If you drive only a personal sedan or small SUV, Class D covers you. If you own a pickup truck under a certain weight, Class C usually works. If you drive for work—delivering goods, hauling materials, or transporting passengers—you'll need a higher class, and the state will require you to pass additional tests to prove you can handle it.
Key Takeaways
- Class D is the standard license for cars and light vehicles; it's what most people get when they first pass their driving test.
- Class A and Class B require a Commercial Driver's License (CDL) and are needed only if you drive trucks over a certain weight for work.
- Class M is a separate license for motorcycles and requires its own written and riding test in most states.
- The weight and purpose of the vehicle you drive determine which class you need, not your preference or how long you've been driving.
- Driving a vehicle that requires a higher class than the one on your license is illegal and can result in fines or criminal charges.
Class D: Standard passenger vehicle license
Class D is the license most people hold. It permits you to drive passenger cars, small pickup trucks (usually under 10,000 pounds), vans, and small SUVs. You get this license by passing a written test on traffic laws and a practical driving test. Most states issue it to drivers age 16 or 17, depending on state law.
Class D does not permit you to drive vehicles used for commercial purposes, even if the vehicle itself is small enough. If you drive a pickup truck to haul materials for a construction company, or a van to deliver packages, you may need a higher class depending on the vehicle's weight and how the state classifies commercial use. The distinction matters: a pickup truck you own and drive for personal use falls under Class D, but the same truck used for business may not.
Class C: Light trucks and vans
Class C covers light trucks and vans that exceed the weight limit for Class D but are still under the threshold for commercial licensing. The weight cutoff varies by state—typically between 10,000 and 26,000 pounds—so check your state's specific rules. Class C does not require a Commercial Driver's License (CDL).
You need Class C if you own a larger pickup truck or van for personal use and your state's rules place it in that category. The test for Class C is similar to Class D: a written exam and a driving test. Some states combine Class C and D into a single license that covers both categories.
Class A and Class B: Commercial truck licenses (CDL required)
Class A and Class B are commercial licenses. Class A covers the heaviest vehicles—typically trucks over 26,000 pounds or any vehicle towing a trailer over 10,000 pounds. Class B covers medium trucks, usually between 14,000 and 26,000 pounds, or smaller trucks towing trailers. Both require a Commercial Driver's License (CDL).
To get a Class A or Class B, you must be at least 18 years old (21 in some states for interstate driving), hold a valid Class D license, pass a written test specific to commercial driving, and pass a practical driving test in the actual vehicle you'll operate. You'll also need a medical certificate proving you meet federal health standards. The written test covers air brakes, hazardous materials, combination vehicles, and other topics specific to commercial driving.
Class A and B licenses are not optional if you drive these vehicles for work. Operating a commercial truck without the correct license class is a criminal offense in most states, even if you're an experienced driver.
Class M: Motorcycle license
Class M permits you to operate motorcycles, mopeds, and motorized bicycles. It is separate from all other classes and requires its own test. To get Class M, you must pass a written test on motorcycle-specific rules and a practical riding test on an actual motorcycle.
Some states offer a Class M endorsement that you add to an existing Class D license, while others issue Class M as a standalone license. A few states allow you to take a motorcycle safety course instead of the riding test; completing an approved course waives the practical exam and sometimes the written exam as well. The course typically takes one or two days and covers basic operation, safety, and emergency maneuvers.
Riding a motorcycle without a Class M license is illegal. Even if you hold a Class D, you cannot legally ride a motorcycle unless your license also shows Class M or an M endorsement.
Class DJ: Restricted license for drivers under 18
Class DJ is a restricted license issued in some states to drivers between 16 and 18 years old. It permits driving passenger vehicles but with restrictions—often a curfew (no driving between 10 p.m. and 5 a.m.), limits on passengers, or a requirement to use a hands-free device for phone calls. The exact restrictions depend on your state and sometimes on how long you've held the license.
Class DJ is temporary. Once you turn 18 or meet other conditions set by your state, it automatically converts to a standard Class D license. You do not need to retake a test; the upgrade happens when you renew your license or reach the age threshold.
How to find out what class you need
Start by identifying the vehicle you plan to drive. Write down its make, model, and year, then look up its Gross Vehicle Weight Rating (GVWR)—the maximum weight it can safely carry, including cargo and passengers. You'll find this number on a sticker inside the driver's door or in the owner's manual.
Next, check your state's Department of Motor Vehicles website for the weight thresholds that separate each class. Most states publish a chart showing which class covers which weight range. If the vehicle is used for business, note that too—some states treat commercial use differently even for lighter vehicles.
If you're unsure after checking the chart, call your state's DMV directly or visit a local office. Staff can tell you which class you need based on the vehicle's specifications and how you plan to use it. It's worth confirming before you buy or start driving, because operating the wrong class is not a minor violation.
What happens if you drive the wrong class
Driving a vehicle that requires a higher class than the one on your license is illegal. The consequences vary by state and by how much higher the class should be, but they typically include a fine (often $200 to $500 or more), points on your driving record, and possible license suspension. If you cause an accident while driving the wrong class, your insurance may deny your claim, leaving you personally liable for damages.
If you're caught driving a commercial vehicle without a CDL, the penalties are steeper. Many states treat this as a criminal misdemeanor, not just a traffic violation. You could face jail time, a substantial fine, and a permanent mark on your driving record that affects your ability to get hired for any driving job in the future.
The safest approach is to get the correct license before you drive. If you're unsure which class you need, contact your state's DMV and ask. The test to upgrade is straightforward, and it takes far less time than dealing with a ticket or an accident.
Frequently Asked Questions
Can I drive a truck with a Class D license if I own it?
It depends on the truck's weight. If it's under your state's threshold for Class C (usually 10,000 to 14,000 pounds), Class D covers it. If it's heavier, you need Class C or higher. Check your truck's GVWR and your state's weight chart to be sure. If you use the truck for business, the rules may be stricter.
Do I need a CDL to tow a trailer?
Only if the combined weight of your vehicle and trailer exceeds your state's threshold—typically 26,000 pounds. A small trailer behind a car usually doesn't require a CDL. Check your state's rules and the GVWR of both the vehicle and trailer to know for certain.
Can I get a motorcycle endorsement added to my Class D license instead of a separate Class M?
Yes, in most states. You can add an M endorsement to your existing Class D rather than getting a separate Class M license. The test is the same; only the paperwork differs. Ask your state's DMV which option they offer.
What if I let my CDL expire—can I still drive a commercial truck?
No. An expired CDL is treated the same as no CDL at all. You cannot legally operate a commercial vehicle. You'll need to renew your CDL before you drive. Renewal typically requires passing the written test again and a medical exam, though some states waive the driving test for renewals.
Do I need a different license class for an electric vehicle?
No. License classes are based on vehicle weight and use, not fuel type. An electric car or truck follows the same class rules as a gas-powered one. Check the GVWR and use the same weight thresholds you would for any other vehicle.