How Long a DOT Medical Card Lasts

The 24-month maximum

The medical examiner's certificate has an expiration date, and the longest interval the federal rules allow the examiner to grant is 24 months. That ceiling is not a promise that a healthy-feeling driver receives two years. It is the outside limit. If the certificate says a shorter date, the shorter date is the law of that card. Adding months in your head, because the last card was longer, does not move the date.

Carriers should type the expiration into the qualification file the day the motor vehicle record updates, and into a reminder that fires at 30 days. A reminder on the morning of expiration is a plan to be late. Appointments, the state posting time, and a dispatch that was already sold do not fit in one morning.

The contents of the exam, the National Registry examiner, and the forms belong on DOT physical requirements. This page does not reteach the exam and does not tell anyone which diagnosis passes. If you want that advice, you want a medical examiner, not a carrier guide.

Why an examiner cuts it to 12, 6, or 3

Shorter certificates exist because the examiner is allowed to certify for a period less than the maximum when the standard calls for monitoring. Three months, six months, and twelve months are ordinary lengths. They are not a punishment the driver can negotiate at the front desk, and they are not a mistake because a friend received 24 months for a different history.

Do not build a list of conditions that always fail. The standards are the examiner's to apply. A carrier that tells drivers a particular diagnosis is an automatic fail, or an automatic pass, is practicing medicine without a file. The carrier's job is to read the date and keep the driver off the road when the date has passed.

A three-month card that expires in the middle of a long contract is a planning problem. Book the next exam when you file this one. Tell dispatch the date. A load that delivers the week the card dies is a load you should not have accepted for that driver. The reminder at 30 days is the minimum. A 90-day reminder on a three-month card is already most of the certificate.

Interstate versus excepted

Non-excepted interstate operation is the NI category on the CDL self-certification. Those drivers must keep a current medical certification tied to the CDL record. Excepted interstate, and intrastate categories, are real statuses with their own limits. They are not a label you adopt so an expired interstate card can keep pulling for-hire interstate freight. If the work is interstate and not excepted, the NI rules are the rules.

When a driver changes the kind of work, the self-certification has to change with it. A driver who was excepted and starts hauling interstate freight that is not excepted has to be in the category that matches the new work, with a current certification on the record, before the trip. The category is not a costume.

State intrastate rules can be stricter or different. This page does not recite them. If you never leave the state and the state has its own medical rule, read the state. Do not cite a federal 24-month maximum as permission to ignore a state date that arrives sooner.

What the state driving record has to show

For CDL holders, the qualification file uses the motor vehicle record that contains the medical certification status. That is the document 391.51 points the carrier to. A paper certificate in the glove box is what the examiner handed the driver. It does not replace the record once the system is built around the state file. Check the MVR. If the status is missing or not certified, do not argue that the paper is in the truck.

The old federal sentence that let a carrier use a paper copy for up to 15 days ran only through June 22, 2025. Do not import that window into a 2026 dispatch. If the record does not show the new exam, the practical step is to make sure the examiner result was submitted to the state and then pull the MVR again. Hauling on a story about a fax that was sent is how the roadside report shows not certified.

Put the MVR that shows the new status into the driver qualification file. Update the reminder to the new expiration. Throw nothing away early. The retention of that MVR follows 391.51, including the rule that the medical MVR may be removed three years after execution, not the morning you get a newer one if you still need the history.

Driving on an expired card

An expired certificate means the driver is not currently certified. A physically unqualified driver may not operate a commercial motor vehicle. There is no extra week hiding in this page, and there is no national grace period to print. State downgrade timing is a state process. Ask that state how fast the CDL record changes, and do not drive while you wait for the answer if the certification has already lapsed.

The companion problem, what the state does to the CDL itself, is the downgrade page. This page stops at duration. If the card will expire, the fix is a new exam by a National Registry examiner before the date, submitted so the MVR updates. After the date, the fix is the same exam, plus the driver stays out of the truck until the record is current. Catching up is not a retroactive certification for the days you already drove.

Carriers that discover the expiration after a trip still have the trips. Do not alter logs or dispatch records to pretend the driver was off duty. Deal with the certification forward, and keep the records you have.

Variance and SPE, in one paragraph and a link

Some drivers operate with a medical variance, such as a Skill Performance Evaluation certificate under 391.49, or another federal exemption document. The variance has its own expiration and its own paperwork in the qualification file. It does not lengthen a standard certificate past 24 months, and it does not excuse an expired underlying certification if the variance itself has lapsed. Read the variance date the same way you read the card date. The qualification-file checklist says where the copy goes. The federal medical programs describe how a variance is requested. This guide will not coach an application and will not guess which impairment qualifies.

Nothing in the length of a card tells you that a driver is safe beyond what the examiner found, and nothing in a short card is a fact you should explain to customers as a moral judgment. File the date. Respect the date. Leave the medicine to the examiner.

If the driver holds a CDL from one state and you operate from another, the record that matters is still the licensing state's medical status, not a photocopy you made at the terminal. Order that state's motor vehicle record when the new certificate should have posted, and do not assume the posting is instant. Build the gap into the 30-day reminder so the load board is not the first place you learn the status never updated.

Frequently Asked Questions