The main license types are sorted by vehicle weight and passenger capacity

Every state issues driver's licenses in classes, and the class you hold determines what you're legally allowed to drive. The classes exist because different vehicles need different skills — a motorcycle requires balance and visibility awareness that a car doesn't, and a 26,000-pound truck needs braking knowledge that a sedan doesn't. Your state's Department of Motor Vehicles (or equivalent) defines which class covers which vehicle, and you can only drive vehicles in your licensed class without facing fines or having your license suspended.

The federal government sets a baseline system, but each state names and organizes its classes slightly differently. Class D in one state might cover standard cars, while Class C in another does the same thing. What matters is understanding what your state calls each class and what vehicles fall under it — not memorizing a national standard that doesn't exist.

Key Takeaways

  • Class D or Class C (names vary by state) covers standard passenger cars and light trucks, and is the most common license type.
  • Class B or Class A covers heavier trucks and buses, and requires a separate written test and often a skills test because the vehicles handle differently.
  • Motorcycle licenses (usually Class M) require a separate test even if you already hold a car license, because the skills don't transfer.
  • Commercial licenses (CDL) are required to drive trucks over a certain weight for pay, and involve medical certification and stricter rules than regular licenses.
  • Your state's DMV website lists the exact weight thresholds and vehicle types for each class, because these thresholds vary by state.

Class D or C: Standard passenger vehicles

This is the license most people hold. It covers passenger cars, pickup trucks under a certain weight limit, and small vans. The weight threshold varies — some states set it at 10,000 pounds, others at 26,000 pounds — so check your state's DMV site for the exact number. You get this license by passing a written test on traffic laws and a driving skills test, usually in that order.

If you're under 18, your state may issue a provisional or restricted license first, which limits when you can drive (no driving after 10 p.m., for example) or who can be in the car with you. These restrictions lift when you turn 18 or after a certain number of violation-free months. The restrictions exist because crash rates for teen drivers drop sharply when night driving and peer passengers are limited.

Class B or A: Trucks and buses

If the vehicle you want to drive weighs more than your state's threshold for Class D, you need a Class B or Class A license. These classes cover dump trucks, box trucks, large vans, and buses. The exact weight cutoff depends on your state — some use 10,000 pounds, others 26,000 pounds — and whether the vehicle is designed to carry passengers or cargo.

Getting a Class B or A license requires more than a Class D test. You'll take a written test specific to heavy vehicles (covering braking distance, load distribution, and mirror use), and you'll take a skills test in an actual truck or bus, not a sedan. Some states also require a medical exam to confirm you can safely operate a larger vehicle. The process takes longer than a standard license, sometimes several weeks if you need to schedule the skills test at a specific testing center.

Class M: Motorcycles

A motorcycle license is separate from a car license, even if you already hold a Class D. You cannot legally ride a motorcycle on a Class D license alone. The test covers motorcycle-specific skills: balance, throttle control, emergency braking, and swerving. Many states offer a motorcycle safety course that, if you pass it, waives the riding skills test at the DMV — you only take the written test. These courses usually run 4 to 8 hours and cost $100 to $300.

Some states issue a Class M endorsement (added to your existing Class D) rather than a separate license. Either way, the written test covers motorcycle laws, visibility, and protective gear requirements. A few states also require a helmet or eye protection during the riding test itself, so check your state's rules before you schedule.

Commercial Driver's License (CDL): Trucks for hire

A Commercial Driver's License is required if you drive a truck over a certain weight (usually 26,000 pounds) for pay — whether you're hauling cargo, passengers, or hazardous materials. You cannot get a CDL just to drive your own heavy truck; it's specifically for people whose job involves operating commercial vehicles. The federal government sets the baseline rules, but states administer the tests and issue the licenses.

A CDL requires a medical certification from a Department of Transportation-approved doctor, a written test on commercial vehicle operation, and a skills test in an actual commercial truck. The written test is longer and harder than a standard license test, covering air brakes, cargo securement, and vehicle inspection. You also need a clean driving record — certain violations or medical conditions can disqualify you. The whole process typically takes 4 to 8 weeks from start to finish.

CDLs come with endorsements for specific cargo types. A hazmat endorsement lets you haul hazardous materials and requires a background check. A passenger endorsement lets you drive buses or vans carrying 16 or more people. You can hold multiple endorsements on one CDL.

Specialized licenses: Mopeds, farm vehicles, and others

Some states issue separate licenses for vehicles that don't fit the standard categories. A moped license covers motorized bicycles under a certain engine size (usually 50 cubic centimeters). A farm license lets you operate agricultural equipment on public roads without a full CDL. Some states also issue golf cart licenses for low-speed vehicles in specific areas.

These licenses have lower age requirements and easier tests than standard licenses because the vehicles are slower and used in limited contexts. A moped license, for example, might only require a written test and no skills test. Check your state's DMV website to see if any of these explore to what you want to drive — they're not available everywhere, and the rules vary significantly.

How to find out which license class you need

The fastest way is to look up your vehicle's gross vehicle weight rating (GVWR) on the driver's side door jamb or in your owner's manual, then visit your state's DMV website and find the page that lists license classes. That page will show you the weight thresholds and tell you exactly which class covers your vehicle. If you're unsure after reading it, call your local DMV office — they can tell you in one call whether you need a new license class or can keep your current one.

If you're planning to get a new license (not renewing), you'll need to pass the written test for that class before you can take the skills test. Some states let you take both tests on the same day; others require you to pass the written test first and schedule the skills test separately. Your state's DMV website will show you the order and what documents to bring.

Frequently Asked Questions

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

Only if the truck is under your state's weight threshold — usually 10,000 or 26,000 pounds depending on the state. Check your vehicle's GVWR and your state's DMV website to confirm. If it's over the threshold, you need a Class B or A license, or a CDL if you're driving for pay.

Do I need a separate test to add a motorcycle endorsement?

Yes, you'll take a written test on motorcycle laws and operation, and either a riding skills test or pass a state-approved motorcycle safety course (which waives the skills test in most states). The safety course route is faster and costs $100 to $300.

What happens if I drive a vehicle I'm not licensed for?

You can be cited for driving without the proper license class, which usually results in a fine and points on your record. In some states, your insurance may not cover an accident if you were driving an unlicensed vehicle class, leaving you liable for damages.

Can I get a CDL if I have traffic violations?

It depends on the violation. Serious violations like DUI, reckless driving, or multiple speeding tickets can disqualify you or delay your process. Contact your state's DMV to ask about your specific record before you pay for the medical exam.

How long does it take to get a Class B or A license?

The written test can be taken within days of explore, but scheduling the skills test in an actual truck may take 2 to 4 weeks depending on your state's testing centers and how busy they are. Plan for 4 to 6 weeks total from process to license in hand.