DOT Physical Requirements — Medical Exam Guide

Every CDL driver must pass a DOT physical examination to obtain and maintain a medical examiner's certificate — commonly called a DOT medical card. The exam is governed by 49 CFR Part 391.41-391.49 and must be performed by a medical examiner listed on the FMCSA National Registry. Without a valid medical card, you cannot legally operate a commercial motor vehicle in interstate commerce.

This guide covers what the exam includes, the standards you must meet, conditions that can disqualify you, and how to prepare so there are no surprises.

What the DOT Physical Exam Includes

The DOT physical is a standardized examination that evaluates whether a driver can safely operate a commercial vehicle. It is not a general health checkup — it is specifically designed to identify conditions that could impair your ability to drive safely.

Vision Test

• Distant visual acuity: At least 20/40 in each eye, with or without corrective lenses
• Field of vision: At least 70 degrees in the horizontal meridian in each eye
• Color recognition: Must be able to distinguish the colors of traffic signals and devices (red, green, amber)

Drivers who need corrective lenses will have a restriction noted on their medical card and CDL. If you cannot meet vision standards in one eye, you may be eligible for a Federal Vision Exemption, but the process takes time and requires documentation.

Hearing Test

• Must perceive a forced whisper at a distance of 5 feet or more, with or without a hearing aid
• Alternatively, must pass an audiometric test with no worse than a 40 dB hearing level in the better ear (using frequencies of 500 Hz, 1000 Hz, and 2000 Hz)

Drivers who use a hearing aid will have that noted on the medical certificate.

Blood Pressure

Blood pressure is one of the most common issues during DOT physicals. FMCSA uses a staged certification approach:

If your blood pressure is borderline, get it under control before your exam. A single high reading can limit your certification period or disqualify you entirely.

Urinalysis

The DOT physical includes a urine test, but it is not a drug screen — it tests for glucose, protein, blood, and specific gravity. Elevated glucose levels may indicate diabetes, which requires further evaluation. Protein or blood in the urine may indicate kidney disease or other conditions that need medical review.

Physical Examination

The examiner conducts a head-to-toe physical assessment covering:

• General appearance — signs of alcoholism, drug use, or conditions affecting alertness
• Eyes — pupil equality, ocular motility, nystagmus
• Ears — hearing capacity, signs of infection or disease
• Mouth and throat — breathing obstructions, signs of disease
• Heart — murmurs, arrhythmias, enlarged heart
• Lungs — wheezing, diminished breath sounds, abnormal sounds
• Abdomen — enlarged organs, masses, hernias
• Extremities — range of motion, grip strength, limb loss or impairment
• Spine — tenderness, deformity, range of motion limitations
• Neurological — reflexes, sensory function, gait, coordination

Disqualifying Conditions

Certain medical conditions will disqualify you from obtaining a DOT medical card:

• Epilepsy or seizure disorders — Any history of epilepsy disqualifies unless the driver has a seizure exemption (requires being seizure-free and off medication for a specified period, typically 8 years)
• Insulin-treated diabetes — Drivers using insulin were historically disqualified, but an exemption program exists. You must apply through FMCSA, demonstrate stable glucose control, and provide endocrinologist documentation. The exemption requires annual recertification.
• Cardiovascular conditions — Heart failure, recent myocardial infarction, or implantable cardiac defibrillators are generally disqualifying. Some conditions can be certified after treatment and specialist clearance.
• Respiratory conditions — Conditions that interfere with the ability to drive safely, including severe COPD or sleep apnea that is untreated
• Mental health conditions — A clinical diagnosis of a condition likely to interfere with safe driving may disqualify. This includes conditions treated with medications that cause sedation.

Medications That Affect Certification

The following medication categories are generally disqualifying:

• Methadone — always disqualifying
• Schedule I controlled substances — always disqualifying
• Narcotics and opioids — disqualifying while in use
• Amphetamines (except prescribed for ADHD — evaluated case by case)
• Sedatives, anti-seizure medications, muscle relaxants — disqualifying if they impair alertness or coordination
• Medical marijuana — disqualifying under FMCSA rules regardless of state or Canadian legalization

If you take any prescription medication, bring documentation from your prescribing physician and be prepared to discuss how the medication affects your alertness and coordination.

Certification Periods

The standard DOT medical certificate is valid for 2 years. However, the examiner can issue a shorter certification period if you have a condition that requires more frequent monitoring:

• 1-year certificate — common for Stage 2 blood pressure, well-controlled diabetes, or certain treated conditions
• Less than 1 year — issued when the examiner wants to re-evaluate a condition after treatment

Your medical card expiration date must be tracked — driving with an expired card is a violation that can result in a ticket, an out-of-service order, and a CSA score impact.

How to Prepare for Your DOT Physical

1. Bring all relevant documents — current medications list, glasses or hearing aids, specialist reports for any ongoing conditions, blood glucose logs if diabetic
2. Control your blood pressure — avoid caffeine, get adequate sleep the night before, and manage stress
3. Bring your sleep apnea compliance report if you use a CPAP — most examiners require 70% compliance over the previous 30 days
4. Wear your corrective lenses — if you normally drive with glasses or contacts, wear them to the exam
5. Stay hydrated — you will need to provide a urine sample
6. Know your medical history — be honest and thorough on the health history form

Cost and Where to Get the Exam

DOT physical exams typically cost between $75 and $150, though prices vary by location and provider. The exam must be performed by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners. You can search the registry by ZIP code to find an examiner near you.

Some carriers cover the cost of the DOT physical for their drivers. If you are an owner-operator, this is a deductible business expense.

Canadian Equivalent

Canadian CDL holders operating under provincial jurisdiction have similar medical examination requirements administered by their home province. Ontario drivers, for example, must complete a medical examination using the Ontario driver medical report form, with periodic renewals. For drivers crossing into the US, a US DOT medical card is required in addition to any provincial medical certificate.

TruckerPro's compliance tracking system monitors medical certificate expiry dates for every driver in your fleet and sends automatic alerts before they lapse — keeping your DOT compliance checklist on track.

Key Takeaways

The DOT physical is a straightforward but strict exam. Know the vision, hearing, and blood pressure standards before you go. Bring all your documentation, manage any chronic conditions proactively, and track your certification expiry date. A lapsed medical card puts you out of service — and a preventable one at that.