The endorsement you need depends on what kind of bus you drive

If you drive a bus for work, you need a Passenger (P) endorsement on your commercial driver's license. This is the main endorsement for any bus that carries passengers — school buses, transit buses, charter buses, or shuttles. Without it, you cannot legally operate a bus, even if you hold a CDL.

Some bus drivers also need a School Bus (S) endorsement if they drive a school bus specifically. A few states require both P and S together; others allow you to hold just S if you only drive school buses. The requirements and rules differ by state, so you will need to check your state's CDL handbook to know which one applies to you.

A third endorsement, Passenger information (PA), is required in some states if you transport passengers with disabilities or operate a bus with a wheelchair lift. Not all states use this endorsement, and rules vary widely.

Key Takeaways

  • The Passenger (P) endorsement is required to drive any bus that carries passengers for hire or as part of your job.
  • The School Bus (S) endorsement is required in most states to drive a school bus, and some states require both P and S.
  • The Passenger information (PA) endorsement is required in some states if you operate a bus with wheelchair lifts or transport passengers with disabilities.
  • You must pass a written test specific to each endorsement you need, in addition to your CDL knowledge and skills tests.
  • Your state's CDL handbook lists which endorsements are required for the type of bus you will drive.

How the Passenger (P) endorsement works

The P endorsement covers any bus that carries passengers — whether it is a city transit bus, a charter or tour bus, a shuttle, or a private bus service. You need it even if you drive a bus that carries only a few people, as long as passengers are paying or you are being paid to transport them.

To get the P endorsement, you must pass a written knowledge test that covers passenger safety, loading and unloading procedures, emergency equipment, and how to handle disruptive passengers. The test is usually 50 questions, and you must score at least 80 percent. You take this test at your state's CDL testing office, the same place you test for your CDL itself.

You do not need to take a separate driving skills test for the P endorsement — your CDL road test covers it. However, the examiner will evaluate you on passenger-related skills like smooth braking, proper mirror checks, and safe acceleration.

School Bus (S) endorsement requirements

If you drive a school bus, you need the School Bus (S) endorsement. Most states require this in addition to the P endorsement, though a few allow S alone if you never drive any other type of bus. Check your state's CDL handbook to see which rule applies where you live.

The S endorsement knowledge test focuses on school bus operation: how to manage student behavior, proper use of the stop arm and flashing lights, evacuation procedures, and how to find the bus. The test is usually 20 questions, and you must score at least 80 percent.

Many states also require a background check and a medical examination before you can get an S endorsement. Some states fingerprint school bus drivers and check criminal history. These requirements exist because you will be transporting children. Your state's CDL office can tell you what background check is needed in your area.

Passenger information (PA) endorsement in states that require it

The PA endorsement is not required in all states, but where it is, you need it if you operate a bus with a wheelchair lift or ramp, or if you transport passengers with disabilities as part of your job. Some states call this the "Passenger information" endorsement; others use different names.

The PA knowledge test covers wheelchair securement, how to operate lifts and ramps safely, how to information passengers with mobility devices, and emergency procedures when equipment fails. The test is usually 20 questions, and you must score at least 80 percent.

Not every state uses a PA endorsement. Some states fold these requirements into the P endorsement test, and others do not require a separate endorsement at all. Your state's CDL handbook will tell you whether PA is required where you live and what it covers.

Steps to add an endorsement to your CDL

If you already hold a CDL and need to add an endorsement, you do not have to retake your CDL knowledge test or road test. You only need to pass the written test for the specific endorsement.

The process is straightforward: (1) Get your state's CDL handbook and study the section for the endorsement you need. (2) Schedule a test appointment at your state's CDL testing office. (3) Pay the endorsement test fee, which varies by state but is usually between $10 and $50. (4) Take the written test. (5) If you pass, your state will issue you a new CDL card with the endorsement listed.

If you do not yet have a CDL, you will take your CDL knowledge test, your endorsement knowledge tests, and your road test all as part of the same process. You can add multiple endorsements at once — for example, both P and S if you are explore to drive a school bus.

What happens if you drive a bus without the right endorsement

Driving a bus without the required endorsement is a violation of federal motor carrier safety rules. You can be cited by law enforcement, and the fine varies by state but is typically $100 to $500 or more. Your employer can also face fines.

More importantly, if you are involved in an accident while driving without the required endorsement, your insurance may not cover the claim. This can leave you personally liable for damages. Some employers will also terminate you for operating without the proper endorsement.

If you are unsure which endorsement you need, contact your state's CDL office or ask your employer. It is much easier to get the endorsement before you start driving than to face a violation later.

Frequently Asked Questions

Do I need both P and S endorsements to drive a school bus?

In most states, yes — you need both the Passenger (P) and School Bus (S) endorsements. A few states allow S alone if you drive only school buses and never other passenger buses. Check your state's CDL handbook or call your state's CDL office to confirm the rule where you live.

Can I take the endorsement test the same day as my CDL test?

Yes. If you are getting your CDL for the first time, you can take your CDL knowledge test and your endorsement knowledge tests on the same day, then take your road test afterward. Many people do this when they are training to be a school bus driver or charter bus operator.

What if I fail the endorsement knowledge test?

You can retake it. Most states let you retake a failed endorsement test the next business day or after a waiting period of a few days. You will pay the test fee again. There is no limit to how many times you can retake it, though your employer may have their own rules about how long training can take.

Does the PA endorsement cost extra?

The PA knowledge test fee is usually the same as other endorsement tests — typically $10 to $50 depending on your state. However, not all states require or offer a PA endorsement, so check your state's CDL handbook first to see if you need it.

Can I get an endorsement if I have a medical condition?

You must meet the same medical standards as any CDL holder. If your state requires a medical examination for the endorsement (as many do for school bus), you will need to pass that exam. If you have a condition that affects your ability to drive, talk to your doctor and your state's CDL office about whether you can still get the endorsement.