The class you need depends on what you're driving and how much it weighs

Every state uses a letter or number system to sort driver's licenses by vehicle type and weight. A Class D (or Class 5 in some states) covers regular cars and light trucks — this is what most people get. A Class A or Class B covers larger vehicles like semi-trucks or buses and requires additional training and testing. A Class M (or motorcycle endorsement) is separate and covers motorcycles only.

The class you need is determined by the Gross Vehicle Weight Rating (GVWR) — the maximum weight the vehicle can safely carry, including cargo and passengers. If you're driving a sedan or a pickup truck under 26,001 pounds, Class D is what you'll get. If you're driving a commercial truck or bus, you'll need a Commercial Driver's License (CDL), which is Class A or B depending on the vehicle.

Your state's DMV website lists the exact weight thresholds and which class covers which vehicles. The distinction matters because driving a vehicle that requires a higher class without that license is illegal, even if you have a regular driver's license.

Key Takeaways

  • Class D (or Class 5) covers regular cars, SUVs, and light pickup trucks under 26,001 pounds GVWR and is what most new drivers receive.
  • Class A and Class B are Commercial Driver's Licenses (CDL) for semi-trucks, large buses, and other commercial vehicles, and require separate testing and medical certification.
  • Class M or a motorcycle endorsement allows you to ride motorcycles and is added to your existing license or obtained separately depending on your state.
  • The vehicle's Gross Vehicle Weight Rating (GVWR) — not what it actually weighs — determines which class you need to drive it legally.
  • Driving a vehicle that requires a higher class than your license covers is a violation, even if you are an experienced driver.

Class D: The standard license for cars and light trucks

Class D is the most common driver's license class and covers passenger vehicles, SUVs, and pickup trucks up to a certain weight limit. In most states, that limit is 26,001 pounds GVWR. This is the license you get when you pass your road test as a new driver, and it's the only class you need if you drive a personal vehicle for yourself or your family.

Some states call this Class 5 instead of Class D, and a few use different letter systems entirely. The name varies, but the purpose is the same: it covers everyday vehicles. If you're unsure what your state calls it, your DMV website will show you the class system used in your state and what each one covers.

Class D does not cover commercial use in most states. If you're driving a vehicle for business purposes — even if it's a regular car — you may need a different class or endorsement. Check with your state's DMV if your driving is work-related.

Class A and Class B: Commercial Driver's Licenses for trucks and buses

A Commercial Driver's License (CDL) is required if you drive a truck or bus for work. Class A covers the largest vehicles: semi-trucks, tractor-trailers, and any combination of vehicles with a GVWR over 26,001 pounds. Class B covers single large vehicles like city buses, dump trucks, and cement mixers that weigh over 26,001 pounds but are not tractor-trailers.

Getting a CDL is more involved than getting a Class D license. You must pass a written test specific to commercial driving, a pre-trip vehicle inspection test, and a road test in the actual vehicle you'll be driving. You also need a current medical certificate from a Department of Transportation (DOT) approved medical examiner, proving you're physically able to operate a commercial vehicle safely.

CDL holders must also follow stricter rules than regular drivers: limits on how many hours you can drive per day, mandatory rest periods, and regular medical recertification. If you're considering commercial driving, understand that the license itself is just the beginning — the job comes with federal regulations that affect how and when you can work.

Class M and motorcycle endorsements

A Class M license or motorcycle endorsement allows you to ride motorcycles, mopeds, and scooters. Some states issue it as a separate license class; others add it as an endorsement to your existing Class D license. Either way, you cannot legally ride a motorcycle on public roads without it, even if you have a regular driver's license.

To get a Class M or endorsement, you typically take a written test on motorcycle-specific rules and safety, then pass a riding skills test on an actual motorcycle. Many states offer a Motorcycle Safety Foundation (MSF) course that, if you pass it, waives the riding test at the DMV. This course teaches you how to handle a motorcycle and is worth taking even if your state doesn't waive the test — motorcycle accidents are common among new riders, and the training can save your life.

The age requirement for a motorcycle endorsement varies by state. Some allow it at 16; others require you to be 18. Check your state's rules before you plan to ride.

Restricted licenses and provisional classes for new drivers

Many states issue a restricted license or provisional license to drivers under 18 or to those who have just passed their road test. These are still Class D licenses, but they come with limitations: no driving between certain hours (often 11 p.m. to 5 a.m.), limits on how many passengers you can carry, or a requirement to use a hands-free device for phone calls.

These restrictions exist to reduce accidents among new and young drivers. They typically stay in place for 6 to 12 months, depending on your state and your age. Once you meet the requirements — usually staying violation-free and reaching a certain age — you can request an unrestricted Class D license.

A restricted license is still a Class D; it just has conditions attached. You cannot drive a vehicle that requires a higher class, even with restrictions in place.

How to find out which class you need

Start by identifying the vehicle you want to drive. Look at the registration or owner's manual to find the GVWR — it's usually listed on a sticker inside the driver's door or on the vehicle's frame. Once you have that number, go to your state's DMV website and find the chart that matches vehicle weights to license classes.

If you're buying a vehicle and aren't sure what class you'll need, ask the dealer or check the manufacturer's specifications before you buy. Discovering after purchase that you need a CDL when you only have a Class D can be expensive and frustrating.

If you're unsure after checking the chart, call your state's DMV directly. They can tell you exactly which class covers the vehicle you want to drive.

Frequently Asked Questions

Can I drive a truck with a regular Class D license?

Only if the truck's GVWR is under 26,001 pounds. Most pickup trucks fall into this range. If the truck is heavier or is a commercial vehicle, you need a CDL. Check the vehicle's GVWR on the door jamb or in the owner's manual to be sure.

Do I need a separate license to drive a motorcycle, or is it just an endorsement?

It depends on your state. Some states issue a Class M as a separate license; others add a motorcycle endorsement to your existing Class D. Either way, you cannot ride a motorcycle without it. Your state's DMV website will show you which system your state uses.

What happens if I drive a vehicle that requires a higher class than my license?

You can be cited for driving without the proper license class, which is a violation. Penalties vary by state but can include fines, points on your record, and license suspension. It's not worth the risk — get the correct class before you drive the vehicle.

Can I get a CDL if I have a regular driver's license?

Yes. You don't need a Class D first; you can go straight to a CDL if you meet your state's age and medical requirements. However, most people get a Class D first and add a CDL later when they start a commercial driving job.

Do I need a Class M license to ride a moped or scooter?

In most states, yes — any motorized two-wheeled vehicle requires a Class M or motorcycle endorsement. A few states have a separate moped class with lower age and testing requirements. Check your state's DMV to see if mopeds are treated differently.