Driver license classes are the categories that show what vehicles you are legally allowed to drive

Every state uses a letter or number system to mark what type of vehicle you can operate. Class D is usually a standard car license. Class A or B typically covers trucks or buses. Some states add endorsements — extra permissions stamped on your license — for things like towing a trailer or carrying passengers for money. The class you hold depends on the vehicle's weight, how many passengers it carries, and what you plan to do with it.

You do not automatically get every class when you pass your test. You test for the specific class you need. If you later want to drive a different type of vehicle — say you buy a commercial truck — you take another test for that class. The class system exists so that only drivers trained for certain vehicles can operate them.

Key Takeaways

  • Class D (or equivalent) is the standard license for cars and light trucks under a certain weight; most people hold this class.
  • Class A and Class B licenses cover commercial vehicles and require separate testing, medical certification, and often a permit period before you test.
  • Endorsements are add-ons to your base class that let you tow trailers, carry hazardous materials, or transport passengers for pay.
  • Each state names and weights its classes differently, so a Class B in one state may not exist or may mean something different in another.
  • You must hold the correct class for the vehicle you drive; driving a commercial truck on a Class D license is illegal even if you are a safe driver.

How states organize license classes

Most states follow a pattern set by federal guidelines, but each state writes its own rules. The federal government sets minimum standards for commercial licenses (called CDL, or Commercial Driver License), but states decide how to organize non-commercial classes and what they call them.

Some states use letters: Class A, B, C, D. Others use numbers: Class 1, 2, 3, 4. A few use both. The key difference is always the vehicle's Gross Vehicle Weight Rating (GVWR) — the maximum weight the vehicle can safely carry, including cargo and passengers. A car typically has a GVWR under 10,000 pounds. A pickup truck might be 10,000 to 14,000 pounds. A semi-truck is 26,000 pounds or more.

Your state's DMV website lists the exact weight thresholds and what each class covers. Because these thresholds vary, you cannot assume your license from one state works the same way in another. If you move or travel across state lines with a vehicle, check the destination state's rules.

Non-commercial classes: what most drivers hold

A standard passenger vehicle license — usually Class D, Class 5, or straightforward "regular license" — lets you drive a car, SUV, or light pickup truck for personal use. The weight limit is typically 10,000 to 14,000 pounds GVWR, depending on the state. You get this license by passing a written test, a vision test, and a driving test. Most people take this test at age 16 or 17.

If you drive a vehicle heavier than your class allows, you are breaking the law, even if you own it and drive it safely. Insurance will not cover you if you are in an accident while operating a vehicle outside your licensed class. A ticket for driving a vehicle you are not licensed for can result in fines and points on your record.

Some states offer a separate class for motorcycles. You must test separately for motorcycle endorsement, and the test includes a riding skills component. A few states require a motorcycle safety course before you can test.

Commercial driver licenses and when you need one

A Commercial Driver License (CDL) is required if you drive a vehicle over a certain weight for pay or as part of your job. The federal threshold is 26,001 pounds GVWR, but some states lower it. You also need a CDL to transport 16 or more passengers (including yourself), or to haul hazardous materials, regardless of vehicle weight.

CDL classes vary by state, but generally Class A covers the heaviest vehicles (tractor-trailers), Class B covers medium trucks (dump trucks, delivery trucks), and Class C covers smaller commercial vehicles or passenger vans. You must be at least 18 to hold a CDL within your state, or 21 to drive across state lines.

Getting a CDL takes longer than a standard license. You must pass a written knowledge test, a pre-trip inspection test, and a behind-the-wheel driving test. Many states require you to hold a CDL permit for a waiting period — often 14 days — before you can test. Some employers or trucking schools require you to complete a training program first. Medical certification is also mandatory: you must pass a physical exam and get a medical certificate from a certified examiner.

Endorsements: add-ons to your base license

An endorsement is a notation on your license that gives you permission to do something your base class does not cover. Common endorsements include:

  • H (Hazmat): Allows you to transport hazardous materials. Requires a background check and written test.
  • P (Passenger): Allows you to drive a bus or van carrying passengers for pay. Requires a written test and sometimes a skills test.
  • T (Tractor-trailer): Allows you to tow a trailer. Some states require this only for commercial drivers; others offer it on non-commercial licenses too.
  • S (School bus): Allows you to drive a school bus. Requires training, a written test, and a background check.

You can hold multiple endorsements on one license. If you want to add an endorsement, you typically take a written test and sometimes a skills test. The cost and waiting period vary by state and endorsement type.

Restrictions: things you cannot do with your license

A restriction is the opposite of an endorsement — it limits what you can do. Common restrictions include:

  • Corrective lenses: You must wear glasses or contacts while driving.
  • Automatic transmission only: You can only drive vehicles with automatic transmissions, not manual.
  • No night driving: You cannot drive between sunset and sunrise. (Common for new teen drivers in some states.)
  • Ignition interlock device: You must use a breath-test device before the engine starts. (Required after certain DUI convictions.)

Restrictions are printed on your license as letters or codes. If you drive in violation of a restriction, you can be ticketed. Some restrictions can be removed by retesting or by meeting conditions (like completing a DUI program for the interlock restriction).

How to find out what class you need

Start with the vehicle's registration or owner's manual — both list the GVWR. Compare that number to your state's DMV website, which shows the weight threshold for each class. If your vehicle is under the threshold for your current class, you are legal. If it is over, you need a higher class.

If you are buying a vehicle and are not sure what license you will need, ask the dealer for the GVWR, then check your state DMV site before you buy. Some people buy a truck thinking they can drive it on a standard license, only to find out later they need a CDL.

Your state DMV can also tell you directly. Call or visit in person with the vehicle's VIN (Vehicle Identification Number) or registration, and they will tell you what class is required.

Frequently Asked Questions

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

Only if the truck's GVWR is under your state's threshold for Class D — usually 10,000 to 14,000 pounds. Most pickup trucks fall under this limit. Larger trucks (dump trucks, box trucks, tractor-trailers) require a CDL. Check your truck's registration or owner's manual for the GVWR, then compare it to your state's DMV chart.

What happens if I drive a vehicle I am not licensed for?

You can be ticketed, fined, and have points added to your driving record. Your insurance may also deny a claim if you are in an accident while driving an unlicensed vehicle class. In some states, you can also face criminal charges if the violation is serious or repeated.

Do I need a CDL to tow a trailer?

It depends on the combined weight of your vehicle and trailer. If the total GVWR exceeds your state's threshold — often 26,001 pounds — you need a CDL. Some states require a CDL for any trailer towing; others do not. Check your state DMV website or call to confirm the rule where you live.

Can I get a CDL if I have a DUI on my record?

Most states allow you to get a CDL even with a DUI, but some impose waiting periods or require you to complete a rehabilitation program first. A few states disqualify you permanently. Contact your state DMV to learn the specific rule in your state.

What is the difference between a Class A and Class B CDL?

Class A covers the heaviest vehicles, typically tractor-trailers and any combination of vehicles over 26,001 pounds. Class B covers medium trucks like dump trucks and delivery trucks, usually 14,001 to 26,000 pounds. Class A drivers can operate Class B vehicles, but Class B drivers cannot operate Class A vehicles.