The six main classes of driver's licenses and what vehicles each covers

Most states issue six classes of driver's licenses, each permitting you to operate a different category of vehicle. The class you hold determines what you are legally allowed to drive — a Class D license does not cover a commercial truck, and a Class A does not cover a standard passenger car without additional endorsements. The class you need depends on the vehicle's weight, how many passengers it carries, and whether you are driving for commercial purposes.

The federal government sets broad standards through the Commercial Driver's License (CDL) regulations, but each state names and structures its classes slightly differently. Some states use letters (A, B, C, D), others use numbers (1, 2, 3, 4), and a few use descriptive names. What matters is understanding what your state's system means for the vehicles you want to drive.

Key Takeaways

  • Class D (or equivalent) is the standard passenger car license most people hold, covering vehicles under 26,001 pounds gross vehicle weight rating.
  • Class A and Class B licenses are commercial licenses that require a Commercial Driver's License (CDL) test and cover trucks and buses of increasing weight and complexity.
  • Class C and Class M licenses cover motorcycles and mopeds, and are issued separately from car licenses in most states.
  • Your state's DMV website lists the exact weight limits, passenger limits, and vehicle types for each class in your state's system.
  • Driving a vehicle heavier or more complex than your license class permits is a violation that can result in fines, points on your record, and liability issues if you cause an accident.

Class D: Standard passenger vehicle license

Class D is the most common license class and is what most people hold. It permits you to drive passenger cars, pickup trucks, vans, and small SUVs — essentially any vehicle that weighs less than 26,001 pounds gross vehicle weight rating (GVWR) and carries no more than 15 passengers (including the driver). This weight threshold is the federal standard that separates non-commercial from commercial vehicles.

A Class D license does not require a Commercial Driver's License test. You take the standard written test on traffic laws and road signs, pass a vision screening, and pass a driving test. Most states issue Class D licenses at age 16 or 17, depending on state law. If you hold only a Class D license, you cannot legally drive a box truck, a dump truck, a school bus, or any vehicle marked as requiring a CDL.

Class A and Class B: Commercial truck and bus licenses

Class A and Class B licenses are commercial licenses that require you to pass a Commercial Driver's License (CDL) exam. The difference between them is the vehicle's gross vehicle weight rating and the type of cargo or passengers involved. Class A typically covers the heaviest vehicles — tractor-trailers, large dump trucks, and tanker trucks — and is the most restrictive to obtain. Class B covers medium-duty trucks, large buses, and vehicles that do not meet Class A weight thresholds but still exceed the Class D limit.

To hold a Class A or Class B license, you must be at least 21 years old (18 in some states for intrastate driving), pass a written knowledge test specific to commercial driving, pass a skills test that includes a pre-trip vehicle inspection and a road test, and meet medical certification standards set by the Federal Motor Carrier Safety Administration (FMCSA). You must also hold a valid Class D license. Many employers require additional endorsements — such as Hazmat (hazardous materials) or Tanker — which add further testing and background checks.

Class C: Motorcycle and moped license

Class C (or Class M in some states) covers motorcycles and mopeds. The exact definition of what counts as a motorcycle versus a moped varies by state — some states define it by engine size (typically 50 cubic centimeters or less for a moped), others by top speed, and others by transmission type. You can usually hold a Class C license in addition to a Class D license, and the two are issued separately.

To obtain a Class C license, you must pass a written test on motorcycle-specific traffic laws and safety, pass a vision test, and pass a riding skills test on an actual motorcycle or moped. Some states offer a motorcycle safety course that, if completed, waives the riding skills test. Age requirements vary — most states allow Class C at 16 or 17, though some require 18. A Class C license does not permit you to ride a three-wheeled motorcycle or an autocycle, which may require a different endorsement or class.

Endorsements and restrictions that modify your class

Your license class can be modified by endorsements (also called designations or qualifications) that expand what you can drive, and restrictions that limit what you can drive. An endorsement is a notation on your license that says you have passed additional testing for a specific vehicle type or cargo. A restriction is a limitation — for example, "corrective lenses required" or "automatic transmission only."

Common endorsements on commercial licenses include Hazmat (hazardous materials), Tanker (tank vehicles), Passenger (buses carrying passengers), and Double/Triple (multiple trailers). On a Class D license, you might see an endorsement for towing a trailer above a certain weight. Restrictions on any class might include "daylight driving only," "no highway driving," or "no passengers under 18." Your state's DMV can tell you which endorsements are available and what testing each requires.

How to find your state's specific class system

Because each state structures its license classes differently, the best source for your state's exact definitions is your state's Department of Motor Vehicles website. Search for "[your state] driver's license classes" and look for a page titled "License Classes," "Types of Licenses," or "Vehicle Classifications." That page will list the class names or numbers your state uses, the GVWR or weight limits for each, the types of vehicles covered, and the age and testing requirements.

If you are unsure whether your current license covers a vehicle you want to drive, call your state DMV or visit a local office with the vehicle's registration or title. The registration lists the vehicle's GVWR, which is the number that determines whether you need a higher class. Do not guess — driving a vehicle your license does not cover can result in a traffic citation, points on your driving record, and liability issues if you cause an accident.

Upgrading from Class D to a commercial class

If you hold a Class D license and want to drive a commercial vehicle, you must obtain a Commercial Driver's License (CDL). The process begins with your state DMV — you cannot upgrade online or by mail. You must visit a DMV office, provide proof of identity and residency, pass a medical examination by a FMCSA-certified medical examiner, and then schedule your written knowledge test and skills test.

The written test covers general knowledge (traffic laws, vehicle inspection, safe driving practices), air brakes (if the vehicle has them), and any endorsements you are pursuing. The skills test includes a pre-trip inspection of the vehicle, a basic control test (backing, turning, parking), and a road test on public roads. Most people study for 4 to 12 weeks before testing. Some employers or trucking schools offer CDL training programs that prepare you for the test, though the test itself is administered by your state DMV.

Frequently Asked Questions

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

Yes, as long as the pickup truck's gross vehicle weight rating is under 26,001 pounds. Most standard pickup trucks fall under this limit. Check the vehicle's registration or title for the GVWR. If it exceeds 26,001 pounds, you need a Class A or Class B commercial license.

What is the difference between Class A and Class B commercial licenses?

Class A covers the heaviest vehicles, typically tractor-trailers and large tankers over a certain GVWR. Class B covers medium-duty trucks and buses that exceed the Class D limit but do not meet Class A weight thresholds. Your state's DMV specifies the exact weight cutoffs.

Do I need a separate license to ride a motorcycle?

Yes, in most states. A Class C or Class M motorcycle license is issued separately from a Class D car license. You can hold both. Some states allow you to add a motorcycle endorsement to your Class D license instead of obtaining a separate class.

What happens if I drive a vehicle my license class does not cover?

You can be cited for driving without the proper license class, which results in a traffic violation, fines, and points on your driving record. If you cause an accident, your insurance may deny coverage because you were operating an unauthorized vehicle.

How do I know what class license I need for a vehicle I want to drive?

Check the vehicle's registration or title for the gross vehicle weight rating (GVWR). Then visit your state's DMV website and find the page listing license classes and their weight limits. Match the vehicle's GVWR to the correct class. If you are unsure, call your state DMV.