A DOT physical exam — officially the FMCSA Medical Examination — is required for every commercial motor vehicle (CMV) driver operating a vehicle that requires a CDL. It must be performed by a federally certified medical examiner listed on the FMCSA National Registry. Understanding each component before you arrive takes the mystery out of the process and dramatically improves your chances of leaving with your certificate in hand.
Most DOT physicals take 45 to 60 minutes from check-in to certificate. You can book your exam online and receive your medical certificate the same day at any of our 10,000+ nationwide locations.
What to Bring to Your DOT Physical
Coming prepared is the most important step. Missing documentation is the most common reason drivers need to reschedule. Bring the following to every DOT physical:
- Complete list of all prescription medications — include dosages and the prescribing physician's contact information
- Glasses or contact lenses — bring them even if you think your vision is adequate without correction
- Hearing aids — bring them and wear them during the exam
- Specialist letters for controlled conditions — diabetes, heart disease, sleep apnea: a letter from your treating physician confirming stable management
- Government-issued photo ID
- Previous medical certificate — helpful but not required
Vision Test
The examiner will test your distance visual acuity in each eye individually and together. FMCSA requires at least 20/40 acuity in each eye, with or without corrective lenses, and a horizontal field of vision of at least 70 degrees in each eye. Color vision must be adequate to distinguish traffic signal colors. If you need glasses or contacts to meet the standard, you'll receive a vision restriction on your certificate — extremely common and does not limit which vehicles you can drive.
Hearing Test
The DOT hearing standard requires drivers to perceive a forced whispered voice in the better ear at not less than 5 feet, with or without a hearing aid. The examiner stands behind you at a 5-foot distance and whispers a series of numbers or words. Alternatively, an audiometric device may be used — you must achieve a threshold of 40 dB or better in your better ear (with hearing aids if worn). Drivers who pass only with a hearing aid receive a hearing aid restriction on their certificate.
Blood Pressure and Pulse
Blood pressure is one of the most commonly flagged areas in DOT physicals. If your first reading is borderline, most examiners will take two or three readings and use the lowest value. Understanding the staging system helps you know where you stand:
| Blood Pressure Stage | Reading | Certification Period |
|---|---|---|
| Normal | Below 140/90 | Up to 2 years |
| Stage 1 Hypertension | 140–159 / 90–99 | 1 year |
| Stage 2 Hypertension | 160–179 / 100–109 | One-time 3-month certificate |
| Stage 3 Hypertension | 180+ / 110+ | Disqualified until controlled below 140/90 |
See our full guide on blood pressure and your CDL for detailed tips on managing your numbers before exam day.
Urinalysis
A urine sample is collected at every DOT physical. This is not a drug test — it screens for medical conditions that could affect driving safety, including glucose (possible diabetes), protein (possible kidney disease), blood in the urine, and specific gravity to assess kidney concentration function. Trace amounts of any of these don't automatically disqualify you. Significant abnormalities may prompt a referral to your primary care physician before certification is issued.
Neurological and Musculoskeletal Exam
The examiner will assess your neurological status — reflexes, coordination, and any history of seizures, strokes, or loss of consciousness. Drivers with epilepsy face strict FMCSA standards: generally seizure-free for a minimum period, stable on or off medication depending on the underlying cause.
The musculoskeletal portion checks range of motion in your spine, arms, and legs. Drivers with chronic back conditions, limb loss, or significant physical impairment may qualify for a Skills Performance Evaluation (SPE) certificate — an exemption that permits certification when a driver demonstrates safe CMV operation despite a physical limitation.
Common Disqualifying Conditions
The vast majority of drivers pass their DOT physical. However, these conditions may result in a deferral or disqualification:
- Current insulin use for diabetes without the FMCSA insulin exemption
- Vision below 20/40 in either eye that cannot be corrected
- Uncontrolled Stage 3 hypertension (180+/110+)
- Active epilepsy or recent seizure history
- Certain cardiac conditions — recent myocardial infarction, uncontrolled arrhythmias
- Untreated severe obstructive sleep apnea
- Current substance abuse or dependence