Yes. You must pass a DOT physical before your state will issue a commercial learner’s permit if you plan to drive in non-excepted interstate commerce. Under 49 CFR 383.71, a new CLP applicant has to be medically examined and certified as physically qualified before the permit is granted.1eCFR. 49 CFR 383.71 – Driver Application and Certification Procedures There is no grace period. No medical certification, no permit.
Who Actually Needs the Physical
When you apply for the CLP, the state asks you to choose one of four self-certification categories. That choice controls whether a federal medical certificate has to be on file:
- Non-excepted interstate — driving across state lines in regular commercial operations. Federal medical certificate required. This is where most CDL applicants land.
- Excepted interstate — crossing state lines only for specific exempt activities (for example, certain school-bus or government operations). No federal medical certificate required.
- Non-excepted intrastate — driving only inside your home state. Your state’s medical rules apply.
- Excepted intrastate — in-state driving that your state has exempted from medical certification.
Pick carefully. If you self-certify as excepted and later take a job that requires non-excepted driving, you’ll have to reclassify and produce the medical documentation you skipped.2Federal Motor Carrier Safety Administration. How Do I Determine Which of the 4 Categories of CMV Operation I Should Self-Certify To
What the Exam Covers
A certified medical examiner reviews your full health history — past surgeries, chronic conditions, and every medication you take, including over-the-counter drugs and supplements — then works through a set of specific checks.
Vision must be at least 20/40 in each eye, with or without correction, and you have to distinguish standard red, green, and amber signals. Hearing has to register a forced whisper at five feet or better, or pass an audiometric test showing no more than a 40-decibel average loss in the better ear at 500, 1,000, and 2,000 Hz.3eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers
The examiner checks blood pressure and pulse, runs a urinalysis to screen for conditions like diabetes or kidney disease, and evaluates musculoskeletal and neurological function. That urinalysis is not the DOT drug test; the drug test is a separate employer requirement under 49 CFR Part 40.
Blood Pressure
Blood pressure is the single most common reason drivers get a shortened certification or fail outright, and the thresholds are tighter than most people expect:
- Below 140/90: full two-year certification.
- Stage 1 (140–159/90–99): one-year certification.
- Stage 2 (160–179/100–109): one-time three-month certificate. If your reading drops below 140/90 in that window, you can get a one-year card.
- Stage 3 (180/110 or higher): disqualified. Once you get below 140/90, you can be certified at six-month intervals.
If you already carry a hypertension diagnosis and take medication for it, expect annual certifications at most.4Federal Motor Carrier Safety Administration. Section 391.41(b)(6) – Driver Safety and Health Medical Requirements
Medications
Some medications are automatic disqualifiers: any Schedule I controlled substance, anti-seizure drugs used to prevent seizures, and narcotics or amphetamines. There is a narrow exception for prescribed controlled substances: if your prescribing doctor writes that you can safely drive a commercial vehicle while taking the drug, the examiner has discretion to certify you. Discretion, not obligation.5Federal Motor Carrier Safety Administration. What Medications Disqualify a CMV Driver
The examiner also looks at your non-prescription medications and supplements. Anything that causes drowsiness or slows reaction time can raise a flag. Bring a full list with dosages instead of trying to reconstruct it from memory in the exam room.
Insulin-Treated Diabetes
Using insulin is not an automatic disqualifier, but the process has extra steps. Your treating clinician has to complete the Insulin-Treated Diabetes Mellitus Assessment Form (MCSA-5870) confirming your condition is stable and well-controlled. Within 45 days of that form being signed, you see a certified medical examiner. If certified, you repeat the process at least yearly.6eCFR. 49 CFR 391.46 – Physical Qualification Standards for an Individual With Diabetes Mellitus Treated With Insulin for Control
Sleep Apnea
Sleep apnea alone won’t disqualify you, but if you use CPAP the examiner will want proof you’re actually using it. The general compliance threshold is at least four hours a night on at least 70 percent of nights. Bring a compliance download covering at least the last 90 days, with data no more than 30 days old on the day of the exam. Drivers who just started CPAP can be certified after a minimum of one week of successful use, but expect a shortened certificate until you have a longer track record.
Finding a Certified Medical Examiner
Your regular family doctor probably can’t do this exam. The examiner must appear on FMCSA’s National Registry of Certified Medical Examiners. Search by location at nationalregistry.fmcsa.dot.gov.7FMCSA National Registry. Search Medical Examiners Chiropractors, nurse practitioners, physician assistants, and doctors of osteopathy can all be certified; what matters is current National Registry status, not the title.
Expect $75 to $150 out of pocket, with prices varying by area and provider. Health insurance rarely covers DOT physicals because they’re treated as a work certification rather than preventive care. If your employer is sponsoring your CDL, ask about reimbursement.
How to Prepare
The fastest way to delay your permit is to arrive unprepared, get a shortened certification, or fail over something you could have handled in advance. Bring:
- A complete medication list with dosages and prescribing doctors, including over-the-counter drugs and supplements.
- Records from any specialist treating a chronic condition. For insulin-treated diabetes, bring the completed MCSA-5870.
- CPAP compliance data covering at least 90 days, printed or saved within the last 30 days.
- Corrective lenses or hearing aids you normally use while driving.
- Dates and details of past surgeries and hospitalizations.
You can fill out the health-history portion of the Medical Examination Report Form (MCSA-5875) at home. Doing it with your records in front of you beats trying to recall dates in the exam room.
If You Don’t Pass
A failed DOT physical does not permanently bar you from commercial driving. Every result, pass or fail, is reported to FMCSA’s National Registry, so the outcome is documented.8FMCSA National Registry. NRII Learning Center For a treatable issue like elevated blood pressure or uncontrolled diabetes, you can address the condition and be re-examined. You’re allowed to seek a second opinion from a different certified examiner, provided you’re honest about your history. Trying to hide a prior failure or a diagnosis is a fast path to losing your driving privileges entirely.
How the Certificate Reaches Your State
When you pass, the examiner completes a Medical Examiner’s Certificate (Form MCSA-5876).9Federal Motor Carrier Safety Administration. DOT Medical Exam and Commercial Motor Vehicle Certification As of June 23, 2025, examiners must transmit results electronically to FMCSA’s National Registry, which forwards them to your state’s driver licensing agency. In states that have fully implemented this system (National Registry II), your medical status posts to your driving record automatically and you no longer hand-carry a paper certificate to the DMV.8FMCSA National Registry. NRII Learning Center
Not every state is there yet. States that haven’t finished implementation still rely on paper certificates, and FMCSA has issued temporary waivers letting drivers in those states carry the paper card as proof of certification.10Federal Motor Carrier Safety Administration. If a State Has Not Implemented National Registry II by the June 23, 2025 Compliance Date Check the NRII Learning Center for the current list. If your state is on it, hold onto your paper certificate until you’ve confirmed the record has been updated.
Keeping the Certificate Current
Passing once isn’t enough to carry you through your CDL career. The Medical Examiner’s Certificate lasts a maximum of 24 months for drivers with no conditions that warrant closer monitoring. Hypertension, insulin-treated diabetes, and vision deficiencies certified under special standards shorten that to 12 months or less.11eCFR. 49 CFR 391.45 – Persons Who Must Be Medically Examined and Certified
The day your certificate expires, you’re no longer qualified to operate a commercial vehicle, and the state can downgrade your CDL to a regular license. Set the reminder early. Recertification slots book up, and a scheduling delay won’t keep your credential active.
Federal rules also require re-examination before returning to commercial driving if any injury or illness impairs your ability to drive safely between scheduled exams, even if the current certificate hasn’t expired.11eCFR. 49 CFR 391.45 – Persons Who Must Be Medically Examined and Certified