DOT Physical Exam Requirements: Checks, Certificate, and Retesting

DOT physical exam requirements are the federal medical standards every interstate commercial motor vehicle driver must meet: adequate vision and hearing, controlled blood pressure, no disqualifying cardiovascular, neurological, or metabolic conditions, and no use of prohibited drugs. A certified medical examiner runs the exam against those standards and, if you pass, issues a Medical Examiner’s Certificate valid for up to 24 months. Certain conditions shorten that window.¹

Who Has to Take the Exam

If you drive a commercial motor vehicle in non-excepted interstate commerce, you need a current Medical Examiner’s Certificate. That covers long-haul truckers, bus drivers, and anyone hauling freight across state lines, including intrastate legs of a shipment that begins or ends in another state.²

A few narrow groups are exempt: drivers who only transport school children between home and school, federal or state government employees driving in their official capacity, and drivers operating farm vehicles within 150 air-miles of the farm. Anything outside those categories triggers the requirement.² Intrastate-only drivers follow their state’s medical qualification rules, which often mirror the federal ones but can differ. FMCSA has no authority to grant exemptions for purely intrastate driving.³

The exam itself must be performed by a medical examiner listed on FMCSA’s National Registry of Certified Medical Examiners. A physical done by anyone not on the registry produces no valid certificate. You can search the registry by city, state, or zip code at nationalregistry.fmcsa.dot.gov.⁴ Cost typically runs between $75 and $150, though some employers cover it.

What to Bring and How to Prepare

Bring a valid driver’s license and any corrective lenses or hearing aids you normally use. You’ll be tested with them.

Bring documentation for any chronic condition. For insulin-treated diabetes, that means a completed ITDM Assessment Form (MCSA-5870) from your treating clinician confirming your regimen is stable and your diabetes is controlled. The form must be presented within 45 days of your clinician completing it.⁵ For heart conditions, bring a clearance letter from your cardiologist. For sleep apnea treated with a CPAP, bring a 90-day compliance report showing consistent use.

Prepare a full list of every medication you take, prescription and over-the-counter, with dosages and the name and contact information of each prescribing doctor. The examiner has to evaluate whether your medications are compatible with safe driving, and a complete list prevents follow-up appointments.

On the practical side, drink water beforehand so a urine sample isn’t a struggle. Skip caffeine and sugary drinks right before the exam; both can spike your blood pressure and glucose readings temporarily. Get a good night’s sleep, especially if your blood pressure runs borderline.

What the Examiner Checks

The physical covers the body systems required by federal regulation: eyes, ears, mouth and throat, heart, lungs, abdomen, and neurological function. The examiner also evaluates your overall appearance, gait, and mental state.⁶ It’s a screening exam, not a full diagnostic workup.

Vision

You need at least 20/40 acuity in each eye individually and 20/40 binocular acuity, with or without corrective lenses. Horizontal field of vision must be at least 70 degrees in each eye. You must be able to distinguish red, green, and amber traffic signals.⁷

Drivers who don’t meet the acuity or field standard in their worse eye can still qualify under a separate set of requirements in 49 CFR 391.44. This replaced the old federal vision exemption program in 2022, so drivers with monocular vision no longer need an individual exemption.⁸ The tradeoff: certification lasts 12 months instead of 24.⁹

Hearing

You must hear a forced whisper at five feet or more in your better ear, with or without a hearing aid. If the examiner uses an audiometer instead, average hearing loss in the better ear cannot exceed 40 decibels at 500 Hz, 1,000 Hz, and 2,000 Hz.⁷

Blood Pressure

Blood pressure is where many drivers run into trouble, and the certification periods scale by tier:

Below 140/90: full two-year certificate, assuming nothing else shortens it.¹⁰
Stage 1, 140–159 / 90–99: one-year certificate with annual monitoring after that.
Stage 2, 160–179 / 100–109: a one-time three-month certificate. If treatment brings you below 140/90 within that window, you can get a one-year certificate dated from the original exam.
Stage 3, 180/110 or above: not certifiable. Treatment and follow-up are required before reapplying.

If your readings tend to run high, this is the single most productive thing to work on before the exam. Cutting sodium, managing stress, and getting consistent sleep in the week before can move the numbers.

Urinalysis

You’ll provide a urine sample. It’s a medical screening for glucose, protein, and other markers of diabetes or kidney problems. It is not the DOT drug test, which is a separate process your employer handles under 49 CFR Part 382.¹¹

Medications and Disqualifying Conditions

Federal rules prohibit CMV drivers from using any Schedule I controlled substance, any amphetamine, any narcotic, or any other habit-forming drug.⁷ Marijuana disqualifies you regardless of your state’s legalization status; the DEA still classifies it as Schedule I and FMCSA enforces that classification for all CMV drivers.¹²

Prescription medications on Schedules II through V are allowed only if a licensed practitioner who knows your medical history has determined the drug won’t impair your ability to drive safely.⁷ A prescription alone isn’t enough. The examiner still evaluates side effects, dosage, and the condition being treated. Opioid painkillers, benzodiazepines, and certain muscle relaxants draw close scrutiny.

Beyond drug rules, the regulations list several conditions the examiner assesses:

Loss of a hand, foot, arm, or leg, or any impairment that interferes with gripping, grasping, or operating vehicle controls. Drivers with limb loss can qualify through the Skill Performance Evaluation (SPE) certificate program, which requires appropriate prosthetics (if applicable) and both on-road and off-road driving tests.¹³
Insulin-treated diabetes. Disqualifying unless you meet 49 CFR 391.46, which requires a stable insulin regimen and the ITDM Assessment Form. Certification is limited to 12 months.⁹
Cardiovascular disease. A current diagnosis of heart attack, angina, coronary insufficiency, blood clots, or any cardiovascular condition associated with fainting, shortness of breath, collapse, or heart failure is disqualifying.⁷
Respiratory dysfunction likely to interfere with safe CMV operation.
Epilepsy or any seizure disorder likely to cause loss of consciousness or vehicle control. Federal exemptions exist for some drivers.
Mental, nervous, or psychiatric conditions likely to interfere with safe driving.⁷

The recurring phrase is “likely to interfere with” safe driving. A controlled condition with proper treatment isn’t automatically disqualifying; the examiner makes a judgment based on your current health, treatment compliance, and driving demands.

Your Certificate and How Long It Lasts

After the exam you’ll get one of three results: medically qualified, qualified with conditions (a shorter certification period or restrictions such as “must wear corrective lenses”), or not qualified.

A standard Medical Examiner’s Certificate (Form MCSA-5876) is valid for up to 24 months. Shorter periods apply when the examiner wants to monitor a condition more closely, such as elevated blood pressure, insulin-treated diabetes, or vision under the alternative standard.¹

Your examiner submits results electronically to FMCSA. During the current transition to the National Registry II system, examiners also issue a paper certificate, and FMCSA recommends they continue doing so until further notice.¹⁴ Keep your paper copy, give one to your employer, and confirm your certificate is on file with your state driver licensing agency to keep your CDL valid.

If You Don’t Pass

Failing usually doesn’t end your driving career. What happens next depends on why you failed. If the issue is treatable, such as high blood pressure, uncontrolled diabetes, or a correctable vision problem, you can address the condition and return for a new exam. There’s no mandatory waiting period for most conditions.

You can also seek a second opinion from a different certified examiner. Keep in mind that FMCSA receives a copy of every medical examination report regardless of the outcome, so shopping examiners without addressing the underlying problem is something the agency can track and investigate.

If your certificate lapses or you’re found not qualified, your state licensing agency may downgrade your CDL to a regular license until you provide a valid certificate. Any driver whose ability to perform normal duties has been impaired by a physical or mental injury or disease must be reexamined before returning to work, even if the current certificate hasn’t expired.⁹

1
Federal Motor Carrier Safety Administration. DOT Medical Exam and Commercial Motor Vehicle Certification
2
Federal Motor Carrier Safety Administration. How Do I Determine Which of the 4 Categories of Commercial Motor Vehicle Operation I Should Self-Certify To
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Federal Motor Carrier Safety Administration. Driver Exemptions
4
Federal Motor Carrier Safety Administration. National Registry of Certified Medical Examiners
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Federal Motor Carrier Safety Administration. Insulin-Treated Diabetes Mellitus Assessment Form, MCSA-5870
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eCFR. 49 CFR 391.43 – Medical Examination; Certificate of Physical Examination
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eCFR. 49 CFR 391.41 – Physical Qualifications for Drivers
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Federal Motor Carrier Safety Administration. Qualifications of Drivers Vision Standard
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eCFR. 49 CFR 391.45 – Persons Who Must Be Medically Examined and Certified
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Federal Motor Carrier Safety Administration. 49 CFR 391.41(b)(6) – Driver Safety and Health-Medical Requirements
11
Federal Motor Carrier Safety Administration. May a Urine Sample Collected for Purposes of Performing a Controlled Substances Test Also Be Used for Medical Qualification Purposes
12
Federal Motor Carrier Safety Administration. Medical Qualification FAQ – Controlled Substances – Marijuana
13
Federal Motor Carrier Safety Administration. Skill Performance Evaluation Certificate Program
14
Federal Motor Carrier Safety Administration. FMCSA Modifies Waiver for Use of Paper Medical Examiner’s Certificate