DOT

DOT Physical Examination: The Department of Transportation (DOT) physical examination is mandated by the Federal Motor Carrier Safety Administration (FMCSA) for commercial motor vehicle (CMV) drivers. Drivers complete and pass a DOT physical to maintain a valid commercial driver’s license (CDL) with the FMCSA medical certificate (health card.)

Dr Becky Bracht is an experienced FMCSA medical examiner.

1. What Is a DOT Physical Exam?

A DOT physical examination is a mandatory medical evaluation required by the Federal Motor Carrier Safety Administration (FMCSA) for all commercial motor vehicle (CMV) drivers. Its purpose is to confirm that a driver is physically, mentally, and emotionally fit to safely operate a commercial vehicle on public roads.

You are required to complete a DOT physical if you operate a vehicle that:

• Has a gross vehicle weight rating (GVWR) of 10,001 pounds or more
• Is designed to transport 9 or more passengers (including the driver) for compensation
• Is designed to transport 16 or more passengers (including the driver), not for compensation
• Transports hazardous materials in quantities requiring placarding

The exam is valid for up to 24 months. However, the medical examiner may issue a shorter certification period — such as 12 months, 3 months, or less — when a medical condition requires closer monitoring. Drivers with conditions such as insulin-treated diabetes or sleep apnea are typically recertified annually.

2. What to Bring to Your Exam

Being well prepared speeds up the process and helps avoid surprises. Bring the following:

• Valid government-issued photo ID (e.g., driver’s license) with current address
• Complete list of all current medications — prescription, over-the-counter, and supplements — with dosages and prescribing doctors’ contact information
• Eyeglasses or contact lenses (if you use them)
• Hearing aids (if you use them)
• Any relevant medical records, specialist letters, or FMCSA waiver / exemption certificates
• CPAP compliance report if treated for sleep apnea (at least 90 days of data, no older than 30 days)
• Form MCSA-5870 if you have insulin-treated diabetes mellitus (completed by your treating clinician within the last 45 days)
• Cardiology clearance letter if you have a history of heart attack, stent, or cardiac surgery

3. What to Expect During the Exam

The examination typically takes 45 to 60 minutes and covers the following components:

3a. Health History Review

You will complete the Medical Examination Report Form (MCSA-5875), disclosing your full medical history. This includes past and current conditions, surgeries, medications, and any history of substance use. Providing false or incomplete information can invalidate your certification and may result in civil or criminal penalties.

3b. Vision Testing

The examiner will test:

• Distant visual acuity — minimum 20/40 in each eye and both eyes together (with or without corrective lenses)
• Field of vision — minimum 70 degrees peripheral vision in each eye
• Color recognition — ability to distinguish red, green, and amber (traffic signals)

Corrective lenses are permitted. 

Monocular vision (vision in only one eye) is generally disqualifying unless an FMCSA vision exemption is obtained.

3c. Hearing Testing

The forced whisper test is used: you must be able to hear a forced whisper from at least 5 feet away in your better ear, with or without a hearing aid. Alternatively, an audiometric test may be performed — a hearing loss in the better ear of no greater than 40 decibels (with or without hearing aid). Hearing aids are permitted.  Make sure ears are clear from wax buildup.

3d. Blood Pressure and Pulse

Blood pressure is checked while you are seated. Pulse is assessed for rate and rhythm. See Section 6 for detailed blood pressure certification guidelines.

3e. Urinalysis

A urine specimen is collected and tested for signs of underlying conditions — primarily kidney disease and uncontrolled diabetes (glucose and protein in urine). This is not a drug screening; however, a separate DOT drug test (5-panel urine screen) may be required by your employer or motor carrier.

3f. Physical Examination

The examiner conducts a hands-on assessment of all major body systems, including:

• General appearance, height, and weight (BMI)
• Eyes, ears, mouth, and throat
• Cardiovascular — heart sounds, rhythm, peripheral circulation
• Lungs and respiratory function
• Abdomen — organ size, tenderness, hernias
• Spine and musculoskeletal — range of motion, deformities, limb function
• Neurological — reflexes, coordination, tremors, mental alertness
• Genitourinary assessment
• Skin — visible abnormalities

3g. Medical History Discussion

The examiner will discuss any flagged health conditions and may ask follow-up questions about medications, treatments, specialist care, or lifestyle factors that could affect driving safety.

4. Common Reasons for Failing a DOT Physical

The following conditions most commonly result in disqualification or a shortened certification period:

• Uncontrolled High Blood Pressure — readings at or above 180/110 are an automatic disqualifier
• Uncontrolled or Poorly Managed Diabetes — especially with hypoglycemic episodes or vision complications
• Untreated Sleep Apnea — failure to treat or document compliance with CPAP therapy
• Vision Deficiency — unable to meet 20/40 acuity or 70-degree peripheral field, or inability to distinguish traffic signal colors
• Hearing Impairment — unable to pass the forced whisper test in the better ear
• Ear canal blockage — Inability to see ear drum due to ear wax accumulation
• Seizure Disorder / Epilepsy — not seizure-free for a minimum of 10 years without medication (unless an FMCSA seizure exemption is granted)
• Cardiovascular Disease — uncontrolled arrhythmias, recent heart attack, chest pain (angina), or inability to obtain cardiologist clearance
• Disqualifying Medications — current use of narcotics, sedatives, or other impairing drugs without documented physician clearance (see Section 8)
• Psychiatric / Mental Health Conditions — conditions that impair judgment, alertness, or reaction time (e.g., severe anxiety, psychosis)
• Missing or Non-Functional Limb — requires FMCSA Skill Performance Evaluation (SPE) unless previously granted
• Obese BMI with Sleep Apnea Risk Factors — may trigger requirement for a sleep study before certification
• Incomplete or False Health History — withholding or falsifying medical information
• Positive or Refused Drug / Alcohol Test — immediate disqualification; a Substance Abuse Professional (SAP) evaluation is required before return-to-duty (drug / alcohol testing is not done at Exceptional Chiropractic)

Note: A failed DOT physical is reported to the FMCSA National Registry, which can result in a ‘not certified’ status and CDL downgrade. 

Drivers may seek a second opinion from a different NRCME-listed examiner; however, medical history must be disclosed truthfully to both examiners.

5. Blood Pressure Requirements

Blood pressure is one of the most common reasons for altered or denied certification. The FMCSA uses the following staging system:

Tips for Exam Day:

• Avoid caffeine, nicotine, and stimulants before the exam — these raise blood pressure
• Rest well the night before
• Arrive a few minutes early and sit quietly to let your reading stabilize
• If your blood pressure is usually controlled but runs high on exam day, inform the examiner — one retest may be allowed

If you are being treated for hypertension, bring documentation of your medication and most recent blood pressure log from your treating physician. The medical examiner may issue a shorter certification period to monitor your condition.

FMCSA Blood Pressure Advisory Criteria: fmcsa.dot.gov — Physical Qualification Standards

6. Hearing Requirements

Federal regulations (49 CFR 391.41(b)(11)) require that a driver must:

• First perceive a forced whispered voice in the better ear at not less than 5 feet, with or without the use of a hearing aid, OR
• If tested using an audiometric device, does not have average hearing loss in the better ear greater than 40 decibels (hearing level in the ISO 1964 revised standard), with or without a hearing aid when the audiometric device is calibrated to American National Standard (formerly combatted with ASA standard Z24.5 — 1951)

Key points for drivers with hearing impairment:

• Hearing aids are permitted — bring yours to the exam
• Total deafness is disqualifying, even with hearing aids
• FMCSA hearing exemptions may be available for some drivers — contact FMCSA directly for eligibility

FMCSA Hearing Standard Reference: 49 CFR 391.41(b)(11)

8. Insulin-Treated Diabetes Mellitus & Form MCSA-5870

In 2018, FMCSA eliminated the blanket prohibition on insulin-treated commercial drivers. Drivers with insulin-treated diabetes mellitus (ITDM) — both Type 1 and Type 2 — may now qualify for CDL medical certification, provided they meet specific requirements.

Who Must Complete Form MCSA-5870?

Any CMV driver who uses insulin to manage diabetes, whether applying for initial certification or renewal, must have their treating clinician complete Form MCSA-5870 (the Insulin-Treated Diabetes Mellitus Assessment Form). This form is also required after any severe hypoglycemic episode.

FMCSA defines a treating clinician as a healthcare professional who manages and prescribes insulin for the individual’s diabetes as authorized by their applicable state licensing authority.

Timing Requirements

• The treating clinician must sign the form no more than 45 days before the DOT physical exam
• The certified medical examiner must receive the form and begin the physical examination within 45 calendar days of the clinician signing it
• Form MCSA-5870 must be renewed annually (ITDM drivers receive a maximum 12-month certification)

What the Treating Clinician Must Attest To (Form Content)

The form requires the treating clinician to document:

• The date the driver began using insulin
• That the driver has maintained at least 3 months of ongoing blood glucose self-monitoring records using an electronic glucometer that stores all readings with date and time
• The number of times per day the driver tests blood glucose
• Compliance with blood glucose self-monitoring per the treatment plan
• Whether the driver experienced any severe hypoglycemic episodes in the preceding 3 months (FMCSA defines severe as requiring assistance of others, or resulting in loss of consciousness or seizure)
• HbA1C results measured intermittently over the last 12 months (most recent within the last 3 months)
• Presence or absence of diabetic complications or target organ damage
• Attestation that the insulin regimen is stable and diabetes is properly controlled

Provisional vs. Full Certification

At the medical examiner’s discretion, a driver who cannot yet provide 3 months of electronic blood glucose records may receive a temporary certification of up to 3 months while they build their monitoring history. A full 12-month certificate requires the complete 3-month record.

FMCSA Form MCSA-5870 (official page): fmcsa.dot.gov/regulations/medical/insulin-treated-diabetes-mellitus-assessment-form-mcsa-5870

Download Form MCSA-5870 (PDF): Direct Download from FMCSA

8. Medications That May Disqualify a Driver

Under 49 CFR 391.41(b)(12) and 21 CFR 1308.11, commercial drivers must not use any Schedule I controlled substance or any habit-forming medication that impairs their ability to safely operate a CMV. The key principle is not the medication itself, but whether it impairs safe operation.

Always Disqualifying (No Exceptions)

• Marijuana / Cannabis — federally prohibited, regardless of state medical/recreational laws or state-issued medical marijuana cards
• Heroin and other Schedule I opiates
• Cocaine and methamphetamine
• Anti-seizure / anti-epileptic medications — any medication taken to prevent seizures is disqualifying under FMCSA regulations
• Methadone — used in opioid treatment programs

Commonly Disqualifying Without Physician Clearance

• Opioid painkillers — morphine, oxycodone (OxyContin), hydrocodone (Vicodin), codeine, fentanyl, tramadol
• Benzodiazepines — diazepam (Valium), alprazolam (Xanax), clonazepam (Klonopin), lorazepam (Ativan)
• Amphetamines / ADHD stimulants — Adderall, Vyvanse, Ritalin, Concerta
• Sleep aids — zolpidem (Ambien), eszopiclone (Lunesta), zaleplon (Sonata)
• Muscle relaxants — cyclobenzaprine (Flexeril), carisoprodol (Soma)
• Sedating antihistamines — diphenhydramine (Benadryl), hydroxyzine (Vistaril)
• Certain antipsychotics and mood stabilizers

Potentially Permissible With Physician Documentation

The following medications are not automatically disqualifying if a licensed physician provides a signed clearance letter stating the drug does not impair the driver’s ability to safely operate a CMV:

• SSRI antidepressants (fluoxetine, sertraline, paroxetine) — generally permitted if no impairing side effects
• Some non-sedating anxiety medications — case-by-case evaluation
• Beta-blockers and some cardiac medications — subject to examiner review
• Metformin and non-insulin diabetes medications — generally permitted with controlled blood sugar

FMCSA FAQ — What Medications Disqualify a CMV Driver?: fmcsa.dot.gov/faq/what-medications-disqualify-cmv-driver

FMCSA Drug & Alcohol Clearinghouse: clearinghouse.fmcsa.dot.gov

9. Sleep Apnea

Sleep apnea is one of the most significant — and commonly unrecognized — health conditions among commercial drivers. FMCSA-sponsored research found that nearly 28% of commercial truck drivers have mild to severe sleep apnea.

While FMCSA regulations do not explicitly mandate sleep apnea testing for every driver, the Pulmonary Standard (49 CFR 391.41(b)(5)) gives medical examiners the authority to require evaluation if a respiratory disorder may interfere with safe driving. Untreated sleep apnea is broadly considered a disqualifying condition.

Risk Factors the Examiner Will Look For

• BMI of 30 or greater (some guidelines flag BMI ≥33)
• Neck circumference greater than 17 inches (men) or 16 inches (women)
• Pulse rate of 90 bpm or greater
• Age over 40
• Loud or frequent snoring / witnessed breathing pauses
• Daytime sleepiness or fatigue
• Co-existing conditions: diabetes, hypertension, hypothyroidism, heart disease, history of stroke
• Small or recessed jaw; large overbite; crowded upper airway

If You Have Diagnosed Sleep Apnea

• You must be actively compliant with prescribed treatment (typically CPAP/BiPAP therapy)
• Bring your CPAP compliance report showing at least 4 hours of use per night for at least 70% of nights
• Compliance data must cover a minimum of 90 days and be no older than 30 days at the time of the exam
• Drivers with sleep apnea are typically recertified annually instead of every 2 years

FMCSA Sleep Apnea Resource: fmcsa.dot.gov/driver-safety/sleep-apnea

10. Mental Health Conditions

The DOT physical includes a mental health history review. Drivers must disclose any history of mental illness or substance use disorders. Conditions that impair judgment, concentration, alertness, or reaction time may be disqualifying.

Potentially disqualifying mental health conditions include:

• Psychosis or schizophrenia — generally disqualifying
• Severe untreated depression or bipolar disorder with significant impairment
• Anxiety disorders — case-by-case; depends on severity and medication
• History of substance use disorder — may require documented period of sobriety and SAP evaluation
• PTSD — evaluated on a case-by-case basis depending on symptom control and medications

Many drivers with well-managed mental health conditions — particularly those on SSRIs — are able to obtain certification. The examiner reviews both the condition itself and any medications used to treat it. A letter from a treating psychiatrist or psychologist detailing controlled status and fitness to drive can be very helpful.

11. What Happens If You Fail or Are Disqualified?

• Your result is reported to the FMCSA National Registry; a ‘not certified’ status may trigger a CDL downgrade by your state DMV
• You may wait and address the underlying condition, then schedule a new DOT physical
• You may seek a second opinion from a different NRCME-certified medical examiner (you must be truthful about your full medical history)
• For some conditions (vision, hearing, seizures), you may apply for an FMCSA waiver or exemption program
• For cardiovascular conditions, seizure disorders, or insulin-treated diabetes, specialist documentation and conflict resolution through FMCSA may be available
• Drug/alcohol violations require completion of the SAP Return-to-Duty process before requalification

12. Key FMCSA Forms

13. Key FMCSA Resources & Links

• FMCSA Medical Program Home: https://www.fmcsa.dot.gov/medical
• DOT Medical Exam & CMV Certification Overview: https://www.fmcsa.dot.gov/medical/driver-medical-requirements/dot-medical-exam-and-commercial-motor-vehicle-certification
• Physical Qualification Standards (49 CFR 391.41): https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-391/subpart-E/section-391.41
• Medical Applications and Forms (all official forms): https://www.fmcsa.dot.gov/medical/driver-medical-requirements/medical-applications-and-forms
• Form MCSA-5870 — Insulin-Treated Diabetes Assessment: https://www.fmcsa.dot.gov/regulations/medical/insulin-treated-diabetes-mellitus-assessment-form-mcsa-5870
• FAQ: What Medications Disqualify a CMV Driver?: https://www.fmcsa.dot.gov/faq/what-medications-disqualify-cmv-driver
• Sleep Apnea and Commercial Driving: https://www.fmcsa.dot.gov/driver-safety/sleep-apnea/driving-when-you-have-sleep-apnea
• Medical Advisory Criteria (Appendix A, 49 CFR Part 391): https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-391/appendix-Appendix%20A%20to%20Part%20391