Glossary · Driver Life & Work
DOT Physical.
Medical examination required for commercial drivers by FMCSA, conducted by certified examiners; validity ranges from 3 months to 24 months based on health.
What it is
The DOT physical is the medical examination required for commercial drivers under FMCSA Part 391. It must be conducted by a medical examiner listed on the FMCSA National Registry of Certified Medical Examiners (NRCME) — a regular family physician can't sign off on it unless they've completed the federal certification.
The exam covers vision (20/40 corrected), hearing, blood pressure, urinalysis (sugar, protein, blood), cardiovascular and pulmonary function, range of motion, neurological assessment, and self-reported medical history. Typical cost runs $80–$150 and the exam takes 30–45 minutes. The result is the Medical Examiner's Certificate (MEDC card), which the driver self-submits to their state DMV to keep the CDL medically current. Standard validity is 24 months for healthy drivers, but the examiner can shorten the window to 3, 6, or 12 months for drivers with managed conditions — diabetes, hypertension, sleep apnea, cardiovascular issues. A shorter certificate isn't a disqualification; it's a tighter monitoring cycle.
Why it matters for trucking finance
An expired DOT physical immediately downgrades the CDL — the driver legally can't operate commercial vehicles until the card is renewed, which can stop revenue overnight. Conditions requiring shorter renewal cycles (under 12 months) signal underlying health risk that some lenders factor into longer-term loan risk assessment. Insurance carriers reference DOT physical status as part of underwriting. Drivers should schedule renewal 60 days before expiration to avoid a revenue gap.
Related terms
- Medical Examiner's Certificate (MEDC) — DOT-required medical certification verifying a commercial driver's physical fitness to operate; issued by a National Registry medical examiner.
- CDL Class A (CDL-A) — Commercial Driver's License Class A — required for combination vehicles over 26,001 lbs GCWR with a towed unit over 10,000 lbs; the standard CDL for OTR trucking.
- Hours of Service (HOS) — FMCSA rules limiting daily and weekly driving time for commercial drivers, designed to prevent fatigue-related crashes.
- CSA Score (CSA) — FMCSA Compliance, Safety, Accountability program scoring system that rates carrier safety performance using roadside inspection and crash data.
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