The classification codes on your driver's license show what types of vehicles you are legally permitted to drive

The letters and numbers printed on your driver's license — like A, A1, B, B1, or B2 — are vehicle class codes. They tell police, insurance companies, and you what you can legally operate on public roads. These codes vary by country and state, so what A means in one place may not mean the same thing elsewhere.

In the United States, most states use a simpler system: you get a standard driver's license that permits you to drive regular passenger cars, and separate endorsements or restrictions appear if you want to drive motorcycles, commercial trucks, or school buses. However, some U.S. states and most countries outside the U.S. use letter-based classifications similar to the European system, which breaks down by engine size and vehicle weight.

Key Takeaways

  • Vehicle class codes on your license indicate which types of vehicles you can legally drive, and they differ between U.S. states and countries.
  • In most U.S. states, a standard license covers passenger cars, while motorcycles and commercial vehicles require separate endorsements.
  • Countries using the European classification system assign letters (A, A1, B, B1, B2, C, D) based on engine size, weight, and vehicle type.
  • Driving a vehicle outside your licensed class can result in fines, license suspension, and insurance claims being denied.

How the U.S. system works

In the United States, your standard driver's license is usually classified as a Class D or Class C license (the naming varies by state), and it permits you to drive passenger cars, pickup trucks, and small vans. This is the license most people receive when they first pass their driving test.

If you want to drive other types of vehicles, you add an endorsement to your license. A motorcycle endorsement (often marked with an M) allows you to ride motorcycles. A commercial driver's license (CDL) endorsement lets you drive large trucks or buses for work. These endorsements require separate testing and background checks beyond your standard license test.

Some states also use restrictions on your license — for example, a restriction might say you can only drive an automatic transmission vehicle, or that you must wear corrective lenses while driving. These appear as letters or codes on the back of your card.

How the European classification system works

Many countries outside the U.S., and some U.S. states that follow international standards, use a letter-based system that groups vehicles by engine size and weight. This system is more detailed than the U.S. approach because it reflects different safety and training requirements for different vehicle types.

Here is what each common classification means:

  • AM: Mopeds and light motorcycles (engine size up to 50cc, maximum speed 28 mph). Minimum age is usually 14 or 16.
  • A1: Light motorcycles (engine size up to 125cc, maximum power 11 kilowatts). Minimum age is usually 16.
  • A: Full motorcycles with no engine or power restrictions. Minimum age is usually 24, or 20 with two years of A2 experience.
  • B1: Three-wheeled vehicles and small four-wheeled vehicles (maximum weight 400 kg). Minimum age is usually 16.
  • B: Cars and small vans (maximum weight 3,500 kg, maximum nine seats including the driver). Minimum age is usually 18.
  • B2: Exists in some countries as a subcategory of B, with slightly different weight or power limits.
  • C: Medium and large trucks (maximum weight 7,500 kg). Requires additional training and medical checks.
  • D: Buses and large passenger vehicles. Requires additional training and medical checks.

If your license shows multiple letters, you can drive all the vehicle types listed. For example, a B license holder can drive any vehicle in the B category, but not vehicles in the C or D categories.

Why your license class matters

Driving a vehicle outside your licensed class is illegal and carries real consequences. If you are stopped by police while driving a motorcycle without an M endorsement, or a truck without a CDL, you can be fined, have your license suspended, or face criminal charges depending on your state or country.

Your insurance company also uses your license class to determine your premium and whether they will cover a claim. If you cause an accident while driving a vehicle you were not licensed to operate, your insurance may deny the claim entirely, leaving you personally responsible for damages.

Additionally, if you are involved in an accident and it is discovered that you were driving outside your license class, you may be found liable even if the other driver caused the crash. This is because you were breaking the law at the time of the accident.

How to find out what your license permits

The easiest way to know what you can drive is to read the back of your physical license card. In the U.S., look for the section labeled "Endorsements" or "Restrictions." In countries using the European system, look for the section showing vehicle classes — it will list the letters you are authorized to drive.

If you cannot find this information on your card, contact your state's Department of Motor Vehicles (DMV) or your country's equivalent licensing authority. You can usually look this up online by entering your license number, or call their office directly. Having this information clear before you rent a vehicle or borrow someone else's car prevents costly mistakes.

What happens if you want to drive a different vehicle class

If you want to expand what you can drive, you will need to take a test specific to that vehicle class. In the U.S., this usually means passing a written exam and a road test for a motorcycle endorsement or a CDL. In countries using the European system, you take a separate test for each class you want to add.

The test requirements vary by state and country. Some require you to complete a training course first, while others let you test without formal instruction. Medical exams are often required for commercial licenses. Contact your local DMV or licensing authority to find out what is required in your area and what the testing fee is.

Frequently Asked Questions

Can I drive a motorcycle with a regular driver's license?

No. In the U.S., you need a separate motorcycle endorsement (usually marked M on your license). In countries using the European system, you need an A, A1, or A2 classification. Driving a motorcycle without the proper endorsement is illegal and your insurance will not cover accidents.

What is the difference between B and B2?

B2 exists in some countries as a subcategory of B with slightly different weight or power limits, but the distinction varies by country. Check your local licensing authority's website or your license card itself to see if B2 appears in your jurisdiction and what it permits.

If I have a CDL, can I drive a regular car?

Yes. A commercial driver's license includes all the permissions of a regular license, plus the ability to drive commercial vehicles. You can use it to drive a passenger car, but you must still follow any restrictions listed on your card.

What happens if I get caught driving without the right endorsement?

You can face a fine, license suspension, or criminal charges depending on your state or country. Your insurance may also deny a claim if you cause an accident while driving outside your licensed class, leaving you personally liable for all damages.

Do I need to take a new test if I move to a different state?

Most states honor licenses from other U.S. states, so you usually do not need to retake the test. However, if you want to add a new endorsement in your new state, you will need to pass that state's test for that endorsement. Check your new state's DMV website for specific rules.