Update a CDL

Commercial Driver License

You can update your CDL DOT Medical Card and Medical Self-Certification category, or upgrade your CDL to a different class.

DOT Medical Card Update
License Class Upgrade

Medical Certification Requirements for Oklahoma CDL and CLP Holders

Per federal CDL regulations, Service Oklahoma is no longer allowed to accept paper medical certificates (med certs or med cards) as of February 17, 2026. Medical Examiner Certificates (MEC) must be electronically submitted through the Federal Motor Carrier Safety Administration (FMCSA) National Registry of Certified Medical Examiners, usually referred to as the National Registry.

What This Means for You

You must complete your USDOT medical examination with a medical examiner listed on the Federal Motor Carrier Safety Administration National Registry of Certified Medical Examiners.
Your medical examiner is required to electronically submit your Medical Examiner’s Certificate (Form MCSA-5876) to the FMCSA National Registry.
The FMCSA will electronically transmit your MEC information to Service Oklahoma.
Service Oklahoma will update your commercial driver record upon receipt of your valid MEC information.
Paper medical certificates will not be accepted.

Medical Certification Inquiries

Forty-eight (48) hours after you have completed your physical examination with a DOT medical examiner, you may request for Service Oklahoma to verify that your medical certification is in the National Registry:

Log in to your Navigate account
Click on Medical Certification Inquiry and complete the information
An email will be returned to you within twenty-four (24) business hours verifying whether your medical certification is on file with the National Registry with further instructions if it is not on file.

Important Reminders

You are responsible for knowing when your medical certificate expires and ensuring your examination is completed before expiration.
Medical examiners must submit MEC information to the National Registry by midnight of the day following your examination.
Forty-eight (48) hours or more, after your exam, confirm with your medical examiner that your MEC was successfully submitted.
Keep a copy of your Medical Examiner’s Certificate for your personal records.

Failure to Maintain Certification

If you are required to maintain a “certified” medical status and your MEC expires or is not received electronically, your status will change to “not certified,” and your CDL or CLP may be downgraded.

For information on locating a certified medical examiner, visit the Federal Motor Carrier Safety Administration National Registry website or contact them at fmctechsup@dot.gov (617) 494-3003.

If you have a CDL Class A, B, or C, and are looking to upgrade your class type (i.e. Class C to a Class A), you will need to go through the Class Upgrade Process.

Steps to Upgrade a License Class

Prepare for the written test

Study the CDL Driver Manual. The manual covers information for the general knowledge test, relevant to all CDL applicants. It also contains specific information on the classes and endorsements tests that are separate from the general knowledge test and require additional study as guide-lined in the manual.

Prepare and bring the following to your appointment:

Proof of Identity - View the list of all acceptable proof of identity documents
Proof of Residency - One proof of address (two if REAL ID)
Current valid Oklahoma CDL
Valid Medical Examiner’s Certificate (DOT Medical Card), if you plan to operate in non-excepted interstate commerce (i.e. leaving Oklahoma with CDL vehicles). Click here to search for a certified Medical Examiner.

Take the Written Test

Start your application by taking the CDL written test in person at a CDL testing facility.

Find a Location

Get your CDL Permit

Once you have successfully completed and passed the necessary written tests for the type of license you are trying to obtain you will get a temporary CLP. You must hold this permit for 14 full days before taking the drive test. You can take the skills test on the 15th day after holding your permit.

The CLP may include CDL endorsements and/or restrictions.

Take the CDL Drive Test

To make a CDL drive test appointment click here. Select "Get started" and then the "Drive test - Commercial Driver License" service to select a location near you.

Have your driver license number and your availability ready when you call to schedule an appointment. A complete drive test usually takes about two hours.

You may also schedule a CDL drive test with a third-party examiner. Third-party examiners can administer drive tests to most applicants applying for a Class A, B, or C commercial driver license (some restrictions may apply).

What to Bring to the CDL Drive Test

Prepare and bring the following documents:

Valid Oklahoma Driver License
Your CLP (Commercial Learner Permit) [received after written test]

Documents showing your written test score sheet [passed] (DL18 CT form that you are administered upon application)
Documentation for the vehicle you will be driving, including valid insurance verification and vehicle registration (exception for cab card for apportioned tag)

During Your Drive Test

During the CDL drive test, you will be required to complete

A pre-trip inspection
The basic control skills test (backing maneuvers)
Road test

More information on the skills test can be found in chapter 12 of the CDL Manual.

Note

Service Oklahoma does NOT supply vehicles for the CDL Skills Test.

After the Drive Test

Once you have successfully completed all the requirements of the CDL drive test, the Examiner will stamp your DL18 certificate (the certificate you received after passing the written portion of your CDL test). You will need to bring the following:

Proof of identity
Proof of Oklahoma residency (two for Real ID)
Your CLP (Commercial Learner Permit) [received after written test]
Documents showing your written test score sheet [passed] (DL18 CT form that you are administered upon application)

certificate to any Service Oklahoma Licensing Office location.

Note

Credit card payment is accepted at Service Oklahoma Licensing Office locations. Appointments are not required to print your license after successfully passing the drive test.

Fees

4-Year Credential Option

Class A: $81.50
Class B: $71.50
Class C: $61.50

8-Year Credential Option

Class A: $138.00
Class B: $128.00
Class C: $108.00

Frequently Asked Questions

You can search for a Certified Medical Examiner near you on the FMCSA website.

To receive a hazardous material endorsement, please visit the TSA Hazmat Endorsement page.

You are no longer required to submit a Medical Examiner's Certificate. This process has been automated and will be sent through an electronic exchange process with FMCSA.

Service Oklahoma will notify you that you are no longer medically certified to operate a CMV in Non-excepted Interstate (NI) commerce. If you do not obtain a new valid Medical Examiner's Certificate within 30 days of expiration, you will have CDL privileges downgraded from your license automatically.

You are required to hold a Medical Examiner Certificate (DOT Medical Card) if you operate, and have self-certified as, Non-Excepted. Learn more about self-certification by visiting the FMCSA website.

If you were told you are physically qualified by a DOT medical examiner and later receive a CDL downgrade letter, it is likely that your medical certification information was not received by Service Oklahoma. If this happens, please act quickly in taking the following steps:

Step 1- Contact the medical examiner that performed your physical qualification examination, explain the issue, and request that they log into their National Registry account and verify if they received an error message task for your examination. If they have, request that they use the copy of your driver’s license submitted at the time of the examination to correct any errors and select submit.

Step 2 - Contact Service Oklahoma at CDLSupport@service.ok.gov or visit any Service Oklahoma location or Licensed Operator to inform them that the medical examiner submitted the validation/correction and to verify that the medical certification information posted.

Step 3 - If neither of the steps above resolve the issue, you can contact FMCSA’s National Registry Technical Support Helpdesk at fmctechsup@dot.gov or (617) 494-3003, to assist in determining the issue and possible corrective actions the agency can assist with.

Service Oklahoma
P.O. Box 11415
Oklahoma City, OK 73136