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A DOT physical exam evaluates vision (20/40 or better each eye), hearing (forced whisper at 5 feet), blood pressure (below 140/90 for 2-year certification), urinalysis (for glucose and protein, not drug testing), overall physical examination including heart, lungs, neurological function, and musculoskeletal system. The examiner also reviews your health history for conditions like epilepsy, diabetes, cardiovascular disease, and sleep disorders. The exam must be performed by a certified medical examiner on the FMCSA National Registry.

To receive a 2-year DOT medical certificate, your blood pressure must be below 140/90 mmHg. Readings between 140-159 systolic or 90-99 diastolic allow 1-year certification. Readings of 160-179 systolic or 100-109 diastolic may qualify for a one-time 1-year certificate with treatment required. Readings at or above 180 systolic or 110 diastolic are disqualifying until blood pressure is reduced through treatment. You can use medication to control blood pressure and still pass.

Yes, in most cases. Drivers with diabetes controlled by diet, exercise, or oral medications can generally pass the DOT physical with documentation of stable blood sugar control. Insulin-dependent drivers must apply for a Federal Diabetes Exemption through FMCSA, which requires an endocrinologist evaluation, documented A1C history, and evidence of stable glucose management. The exemption must be renewed annually and requires self-monitoring of blood glucose levels.

A DOT medical certificate is valid for up to 2 years for drivers who meet all health standards. However, the certification period may be shortened to 1 year or less if the medical examiner identifies conditions requiring monitoring, such as elevated blood pressure, treated diabetes, or other health concerns. The examiner has discretion to set the certification period based on individual health factors.

DOT standards require distant visual acuity of at least 20/40 (Snellen) in each eye, with or without corrective lenses. You must also have a field of vision of at least 70 degrees in the horizontal meridian in each eye. If you wear corrective lenses to meet the standard, you must wear them while driving. Monocular vision (loss of one eye) requires a Federal Vision Exemption, which involves a road test and documented adjustment period.

The DOT physical itself does not include a drug test. The urinalysis performed during the physical checks for glucose (diabetes indicator) and protein (kidney function), not drugs. However, DOT-regulated employers are required to conduct separate pre-employment, random, post-accident, and reasonable suspicion drug and alcohol testing under 49 CFR Part 40. These are separate from the physical exam and follow strict chain-of-custody and testing procedures.

There is no specific weight or BMI limit for DOT physicals. However, drivers with a BMI of 35 or higher may be referred for sleep apnea screening, especially with a neck circumference over 17 inches (men) or 15.5 inches (women) and symptoms like excessive daytime sleepiness. If sleep apnea is diagnosed, treatment with CPAP and documented compliance is required before certification. Being overweight alone does not disqualify you.

Commercial drivers must have a valid DOT medical certificate at all times while operating CMVs in interstate commerce. The maximum certification period is 2 years, so most drivers undergo physicals every 2 years. Drivers with certain health conditions (hypertension, treated diabetes, cardiovascular disease) may be certified for shorter periods, requiring annual or semi-annual examinations. Always schedule your renewal before your current certificate expires.

Automatic disqualifiers include uncontrolled epilepsy or seizure disorders (seizure-free for 8+ years without medication may apply for exemption), vision worse than 20/40 without correction, hearing loss beyond DOT limits, blood pressure at or above 180/110, current use of Schedule I drugs, alcoholism, and certain cardiovascular conditions. Insulin-dependent diabetes and monocular vision are not automatic disqualifiers but require Federal Exemptions. Many conditions that initially appear disqualifying can be addressed with treatment and proper documentation.