An endorsement is a notation on your driver's license that says you are trained and tested to operate a specific type of vehicle or cargo

An endorsement is not a separate license — it is a permission added to your existing Commercial Driver's License (CDL). Without the right endorsement, you cannot legally operate certain vehicles or haul certain materials, even if you hold a CDL. For example, you can have a valid CDL but still be breaking the law if you drive a tanker truck without a tanker endorsement, or transport passengers without a passenger endorsement.

Each endorsement requires you to pass a written test specific to that endorsement. Some endorsements also require a skills test. The endorsement appears as a letter code on your license — for instance, "H" for hazardous materials or "P" for passengers. Your state's DMV or licensing authority issues endorsements and keeps track of which ones you hold.

Key Takeaways

  • An endorsement is a permission code on your CDL that allows you to operate specific vehicle types or transport specific cargo.
  • Each endorsement requires passing a written test, and some require a skills test, before the code appears on your license.
  • Operating a vehicle or hauling cargo that requires an endorsement you do not have is illegal, even with a valid CDL.
  • Common endorsements include H (hazardous materials), T (double/triple trailers), P (passengers), and N (tank vehicles).
  • You can hold multiple endorsements on a single CDL if you pass the tests for each one.

The most common endorsements and what they allow

The H endorsement (hazardous materials) allows you to transport materials classified as hazardous by the Department of Transportation — explosives, flammable liquids, gases, poisons, and radioactive materials. You must pass a written test and a background check. Many employers require this endorsement.

The P endorsement (passenger) allows you to operate a bus or other vehicle designed to carry 16 or more passengers. You must pass a written test and a skills test that includes a pre-trip inspection, basic controls, and on-road driving. This endorsement is required for school bus drivers, transit bus drivers, and charter bus operators.

The T endorsement (double and triple trailers) allows you to tow two or three trailers at once. You must pass a written test covering the handling and braking differences of multiple trailers. This endorsement is common in long-haul trucking.

The N endorsement (tank vehicles) allows you to operate a vehicle with a permanently mounted tank of 1,000 gallons or more. You must pass a written test covering the physics of liquid surge and the special handling requirements of tanker trucks. This endorsement is separate from the H endorsement, though many drivers hold both.

How endorsements affect your job and pay

Many trucking and transportation jobs require specific endorsements. A company hiring hazmat drivers will not hire you without an H endorsement. A school district will not hire you as a bus driver without a P endorsement. Some employers will hire you and pay for your endorsement test, while others expect you to arrive with endorsements already in hand.

Drivers with multiple endorsements often earn more than drivers with a basic CDL. A driver with H and T endorsements can take on more specialized and higher-paying loads than a driver with neither. The endorsement itself does not raise your pay, but it opens doors to jobs that do.

If you lose an endorsement — for example, if your hazmat endorsement expires or is suspended — you lose the right to do that work when ready. Your employer may reassign you, reduce your hours, or let you go depending on the job and the company's policy.

How to get an endorsement

The process starts with studying the endorsement-specific material. Your state's DMV publishes a CDL manual or handbook that includes a section on each endorsement. You can also find practice tests online through your state's licensing authority or through third-party test prep sites.

Next, you schedule a written test at your state's DMV or testing location. The test covers the rules, safety practices, and vehicle-specific knowledge for that endorsement. Most written tests are 20 to 50 questions and take 30 to 60 minutes. You must pass with a score that varies by state, usually 80 percent or higher.

For endorsements that require a skills test — primarily the P endorsement — you will also need to schedule and pass a practical driving test. This test is administered by an examiner and covers pre-trip inspection, basic vehicle control, and on-road driving in real traffic.

Once you pass the required tests, the DMV adds the endorsement code to your license. The process usually takes a few days to a few weeks, depending on your state's processing time.

Endorsement restrictions and when they expire

Some endorsements come with restrictions. For example, if you have a P endorsement but fail the air brake test, you may receive a restriction that limits you to vehicles with manual brakes. A restriction narrows what you can do with an endorsement you hold.

Endorsements do not expire on a fixed schedule the way licenses do. However, if your CDL expires, all your endorsements expire with it. If your hazmat endorsement is suspended or revoked — usually because of a criminal conviction or a failed background check — you lose that endorsement even if your CDL remains valid. You can reapply for a suspended endorsement once you meet the requirements again, but the process is the same as getting it the first time.

Removing or changing endorsements

You can request that your state remove an endorsement from your license. This is rare but happens when a driver no longer needs the endorsement or wants to avoid the background check renewal that some endorsements require. Contact your state's DMV to request removal.

If you want to add a new endorsement to an existing CDL, you follow the same process as getting your first endorsement: study, pass the written test, pass any required skills test, and the DMV adds it to your license. You do not need to renew your entire license or retake tests for endorsements you already hold.

Frequently Asked Questions

Can I get multiple endorsements at the same time?

Yes. You can take multiple written tests in one visit to the DMV, and you can schedule multiple skills tests if needed. Many drivers get their H and N endorsements together, or their P and S endorsements together, depending on the job they are pursuing.

What happens if I drive without the endorsement I need?

You are breaking the law. You can be cited, fined, and in some cases arrested. Your employer can also be fined. If you cause an accident while operating a vehicle without the required endorsement, your insurance may deny your claim.

Do I have to renew my endorsements when I renew my CDL?

No. Your endorsements stay on your license as long as your CDL is valid. When you renew your CDL, your endorsements renew automatically. However, some endorsements like hazmat require a background check at renewal, and you may need to retake the written test depending on your state's rules.

How much does it cost to get an endorsement?

The cost varies by state. Most written tests cost between $10 and $50. Skills tests, if required, cost more — typically $50 to $200 depending on the endorsement and the testing facility. Some employers cover these costs for their drivers.

Can I get an endorsement if I have a criminal record?

It depends on the endorsement and the conviction. Hazmat endorsements require a federal background check and disqualify you for certain crimes. Other endorsements have fewer restrictions. Contact your state's DMV to learn what disqualifies you for the specific endorsement you want.