What an additional endorsement means and why you might need one
An additional endorsement is a notation added to your existing driver's license that gives you permission to operate a specific type of vehicle or cargo you are not currently licensed for. If you already hold a CDL and want to haul hazardous materials, operate a double or triple trailer, or transport passengers, you will need to add the endorsement that matches that work.
You do not have to get a new license — the endorsement is added to the one you already have. The process involves passing a written test, a skills test, or both, depending on which endorsement you are seeking. Some endorsements require a medical certificate or background check as well.
Common endorsements include H (hazmat), T (double/triple trailers), P (passenger), and X (combination of hazmat and tanker). Your state's DMV or equivalent agency handles the testing and issuance.
Key Takeaways
- An additional endorsement is added to your current CDL and allows you to operate vehicles or carry cargo types you are not currently licensed for.
- You must pass a written test for the endorsement, and some endorsements also require a skills test or medical clearance.
- Hazmat endorsements require a Transportation Security Administration (TSA) background check, which can take several weeks.
- The cost and processing time vary by state, but most endorsements are issued within two to four weeks after you pass the test.
- You can add multiple endorsements to a single CDL if you meet the requirements for each one.
Which endorsements exist and what each one allows
The Federal Motor Carrier Safety Administration (FMCSA) sets the endorsement categories, but your state issues them. The most common are:
H (Hazmat): Allows you to transport hazardous materials. Requires a written test covering hazmat regulations, placarding, and emergency procedures. Also requires a TSA background check, which includes fingerprinting and a criminal history review. The background check is the longest part of the process and can take 4 to 8 weeks.
T (Double/Triple Trailers): Allows you to operate doubles or triples. Requires a written test on coupling, uncoupling, and safe operation of multiple trailers. Some states also require a skills test.
P (Passenger): Allows you to transport 16 or more passengers (including yourself). Requires a written test on passenger safety, loading, and emergency procedures. Some states require a skills test as well.
X (Hazmat and Tanker): Combines H and N endorsements. Requires passing both the hazmat and tanker written tests and completing the TSA background check.
N (Tanker): Allows you to transport liquids in bulk. Requires a written test on tank vehicle operation, braking, and handling.
S (School Bus): Allows you to operate a school bus. Requires a written test and a skills test, plus a background check in most states.
Steps to add an endorsement to your CDL
The process is similar across states but varies slightly. Here is the general order:
- Check your state's requirements. Visit your state DMV website and find the endorsement you want. Note the written test fee, any skills test fee, and whether a background check is required. Some states charge $10 to $50 for the written test alone.
- Study the manual. Your state DMV provides a free study guide for each endorsement. read it or pick up a copy at the DMV office. The written test covers the material in that manual.
- Schedule your written test. Most states let you book online or by phone. Some allow walk-ins. The test is usually given at a DMV office and takes 30 to 60 minutes.
- Pass the written test. You typically need a score of 80% or higher. If you fail, you can retake it after a waiting period (usually 1 to 7 days, depending on your state).
- If required, schedule a skills test. Some endorsements (P, S, T in some states) require a behind-the-wheel test. This is scheduled separately and usually costs $50 to $150.
- If required, complete a background check. For hazmat (H) endorsements, you will need to submit fingerprints and consent to a TSA background check. This is done at a designated location, often a DMV office or a third-party vendor. The check takes 4 to 8 weeks.
- Receive your updated license. Once you pass all tests and any background check clears, your state will issue an updated CDL with the new endorsement printed on it. This usually arrives by mail within 1 to 2 weeks.
Costs and timeline for adding an endorsement
The cost of adding an endorsement depends on your state and the type of endorsement. Written tests typically cost $10 to $50. Skills tests, where required, cost $50 to $150. Background checks for hazmat endorsements are usually free or cost a small fee ($5 to $15) to cover fingerprinting.
The timeline also varies. If you only need a written test, you can often get your updated license within 2 to 4 weeks of passing. If a skills test is required, add another 1 to 2 weeks for scheduling and testing. If a hazmat background check is required, add 4 to 8 weeks — this is the longest part of the process and is outside your state's control because the TSA conducts it.
Some states charge a small fee to reissue your license with the new endorsement (usually $5 to $20). Check your state's DMV website for the exact fees and current processing times, as these change.
What happens if you drive with an endorsement you do not have
Operating a vehicle or carrying cargo that requires an endorsement you do not have is a violation of federal and state law. Penalties include fines ranging from $100 to $1,000 or more, points on your driving record, and potential suspension of your CDL. If you are caught transporting hazmat without an H endorsement, the penalties are typically more severe.
Your employer is also liable if they knowingly allow you to operate a vehicle you are not licensed for. This can result in fines to the company and loss of operating authority.
Renewing or removing an endorsement
Endorsements are renewed along with your CDL. When your license expires, you renew the entire license, and all endorsements renew with it. You do not have to retake the endorsement tests unless your state requires periodic retesting for certain endorsements (some states require hazmat endorsement holders to retake the test every few years).
If you want to remove an endorsement, you can request this at your state DMV. There is usually no fee, and it takes effect when ready. You might remove an endorsement if you no longer perform that type of work or if your endorsement is suspended due to a violation.
Frequently Asked Questions
Can I add more than one endorsement at the same time?
Yes. You can take multiple written tests in one visit and schedule skills tests separately. However, if you need a hazmat background check, that must complete before your license is issued, even if you are adding other endorsements too.
What if I fail the written test for an endorsement?
You can retake it after a waiting period set by your state, usually 1 to 7 days. There is typically a fee each time you test. Study the manual more thoroughly before your next attempt — the test covers specific regulations and procedures.
Do I need a medical certificate to add an endorsement?
Not for most endorsements. However, if you are adding a passenger (P) or school bus (S) endorsement, some states require a medical examination. Check your state's requirements before you schedule your test.
How long does the TSA background check take for a hazmat endorsement?
The TSA background check typically takes 4 to 8 weeks from the date you submit your fingerprints. During this time, you cannot legally transport hazmat, even if you passed the written test. Plan ahead if you need the endorsement by a specific date.
Can I drive with my old license while waiting for the new one with the endorsement?
Yes. Your old CDL remains valid until your new one arrives. However, you cannot legally operate a vehicle that requires the new endorsement until the updated license is in your hand.