What the X Endorsement Covers

The X endorsement on a Commercial Driver's License authorizes you to haul both hazardous materials and passengers in the same vehicle. It is the combination of two separate endorsements: the H endorsement (hazmat) and the P endorsement (passenger). You cannot get an X endorsement on its own — you must first hold both H and P, or obtain them at the same time you request the X.

This endorsement is required if your job involves driving a vehicle that carries both hazardous cargo and paying passengers. Examples include certain shuttle services that transport both materials and people, or specialized commercial operations where both functions occur in the same trip. Most drivers do not need an X endorsement; you need it only if your specific role requires both endorsements simultaneously.

The X endorsement does not replace H or P — it sits alongside them on your license. Your license will show all three: H, P, and X. The X straightforward signals that you have met the requirements for both hazmat and passenger transport and are authorized to do both in a single vehicle.

Key Takeaways

  • The X endorsement requires you to first obtain or already hold both the H (hazmat) and P (passenger) endorsements.
  • You must pass the hazmat knowledge test, the passenger knowledge test, and a Transportation Security Administration (TSA) background check to may have access to for X.
  • The TSA background check for hazmat can take several weeks, so plan ahead if you need the X endorsement for a job start date.
  • Your state's DMV will issue the X endorsement once both H and P are on your license and all requirements are met.
  • Renewal timelines for X follow your state's CDL renewal schedule, though hazmat renewals may occur on a different cycle than your main license.

Requirements for the X Endorsement

Before you can request an X endorsement, you must already have a valid CDL with both H and P endorsements, or you must obtain them together. If you do not yet have either endorsement, you will need to pass the knowledge tests for both hazmat and passenger transport first. Your state's DMV will have separate written exams for each.

The hazmat portion requires a TSA background check, which is the longest part of the process. You cannot complete this check until you have passed the hazmat knowledge test. The TSA will review your criminal history, immigration status, and other factors to determine whether you are may be able to access to handle hazardous materials. This check typically takes two to four weeks, though it can take longer if the TSA needs additional information from you.

Once the TSA approves you for hazmat, and you have passed the passenger knowledge test, your state's DMV will add the X endorsement to your license. You do not take a separate test for X itself — the endorsement is granted once both H and P are active on your license.

The TSA Background Check Process

The TSA background check is a federal requirement for anyone seeking hazmat endorsement, including those pursuing X. You initiate this process through your state's DMV, not directly with the TSA. After you pass the hazmat knowledge test, the DMV will submit your information to the TSA.

The TSA will examine your fingerprints, criminal record, driving history, and immigration status. They will also check whether you have any disqualifying offenses, such as certain felonies, DUI convictions, or immigration violations. The process is thorough and can take several weeks. If the TSA needs more information, they may contact you directly.

If the TSA denies your hazmat clearance, you will receive a written explanation. You have the right to request reconsideration or appeal, though the process varies by state. If you are denied, you cannot obtain the H endorsement, and therefore cannot obtain X either.

Knowledge Tests for H and P Endorsements

You must pass two separate written tests: one for hazmat (H) and one for passenger (P). These are administered by your state's DMV and cover different material. You can take them in any order, though most people take the hazmat test first since the TSA background check begins after you pass it.

The hazmat knowledge test covers the Department of Transportation (DOT) hazmat regulations, including how to identify hazardous materials, proper placarding, shipping papers, emergency procedures, and vehicle safety. The test is typically 30 questions, and you must score at least 80 percent to pass. You can study using your state's CDL manual and the DOT's hazmat materials handbook.

The passenger knowledge test covers passenger safety, vehicle inspection specific to passenger vehicles, emergency procedures, and passenger management. This test is also typically 20 to 30 questions with an 80 percent passing score. Study materials are included in your state's CDL manual.

Timeline and Fees

The total time to obtain an X endorsement depends on whether you already have H and P or are starting from scratch. If you already hold both endorsements, adding X is usually when ready once the DMV processes your request — often the same day or within a few business days.

If you do not yet have H and P, the timeline is longer. You will need to schedule and pass both knowledge tests (typically a few days to a week apart), then wait for the TSA background check (two to four weeks). After TSA approval, the DMV will add the X endorsement. Total time is usually four to eight weeks.

Fees vary by state. Most states charge a separate fee for each endorsement (H and P), and some charge an additional fee to add X. Fees typically range from $10 to $50 per endorsement, but check your state's DMV website for exact amounts. The TSA background check itself is free, though your state may charge a processing fee.

Renewal and Expiration

The X endorsement renews on the same schedule as your CDL in most states. However, the hazmat portion (H) may have a different expiration date than your main license. Hazmat endorsements typically expire every five years, while CDLs may renew on a different cycle depending on your state and age.

When you renew your CDL, you will need to renew the H endorsement as well, which means passing the hazmat knowledge test again and undergoing another TSA background check. The P endorsement usually renews with your main CDL without a separate test, though some states require a passenger knowledge test at renewal.

Check your license carefully to see the expiration dates for each endorsement. If your hazmat endorsement expires before your main CDL, you must renew it separately or you will lose the H and X endorsements, even though your CDL remains valid.

Common Mistakes to Avoid

One frequent error is assuming you can obtain X without first having both H and P. You cannot. If you only have one of them, you must obtain the other before requesting X. Some drivers also underestimate the time needed for the TSA background check and explore too close to a job start date, then face delays.

Another mistake is not tracking the separate expiration dates for hazmat versus your main CDL. If your hazmat endorsement expires and you do not renew it, you lose the X endorsement when ready, even if your CDL is still valid. Set a reminder several months before your hazmat expiration date.

Some applicants fail the knowledge tests on the first attempt because they do not study the hazmat materials thoroughly. The hazmat test is more detailed than the passenger test and requires understanding DOT regulations, not just general safety. Use your state's official CDL manual and the DOT hazmat handbook to prepare.

Frequently Asked Questions

Can I get an X endorsement if I have been denied hazmat clearance before?

Not unless the denial has been overturned. If the TSA denied your hazmat clearance in the past, you can request reconsideration or appeal through your state's DMV. The process and timeline vary by state. Contact your DMV to learn whether you can reapply and what documentation you need to submit.

Do I need to pass the passenger test again if I already have a P endorsement?

No. If you already hold the P endorsement, you do not need to retake the passenger test to add X. You only need to obtain the H endorsement (pass the hazmat test and complete the TSA background check), and then the DMV will add X to your license.

What happens if the TSA background check takes longer than expected?

The TSA will contact you if they need additional information. In the meantime, your process is pending and you cannot legally haul hazmat. If you have a job start date approaching, inform your employer of the delay. Most TSA checks complete within four weeks, but complex cases can take longer.

Can I drive with hazmat and passengers before my X endorsement is officially issued?

No. You can only haul hazmat if you have the H endorsement, and only carry passengers if you have the P endorsement. You cannot do both in the same vehicle unless you have the X endorsement on your license. Driving without the proper endorsement is a violation and can result in fines and license suspension.

Does my X endorsement transfer if I move to another state?

No. If you move to a new state, you must obtain a new CDL from that state. You will need to retake the knowledge tests for H and P, and the TSA will conduct a new background check. Your previous X endorsement does not carry over. Some states have reciprocity agreements that may speed up the process, but you still need a new license.