DOT Physical Requirements: CDL Medical Exam Guide

Getting your DOT physical right is a key step for any CDL holder who wants to stay on the road. The exam checks that you can safely operate a commercial vehicle, and meeting the DOT physical requirements keeps your medical card current for up to two years.

Most drivers pass without drama when they prepare ahead. The process is straightforward once you know what the examiner looks for.

Understanding DOT Physical Requirements

The DOT physical covers vision, hearing, blood pressure, heart health, lungs, and neurological function. You also answer questions about medications and medical history.

Vision must be at least 20/40 in each eye with or without correction. Hearing needs to detect a forced whisper at five feet. Blood pressure under 140/90 usually earns a two-year card; readings between 140/90 and 159/99 may get a one-year card.

Blood Pressure CDL Limits and Preparation

• Keep sodium low the week before the exam.
• Stay hydrated and avoid caffeine the morning of the test.
• Bring a list of any blood pressure meds and recent readings from your doctor.

If your numbers run high, many drivers get a temporary card and work with their physician to bring pressure down before renewal.

Sleep Apnea CDL Rules

Sleep apnea is a common concern. If you have a diagnosis or show clear risk factors like high BMI and daytime fatigue, the examiner may require a sleep study. CPAP users who show consistent use on their machine data can still qualify for a full medical card.

Bring your most recent compliance report to the exam. Examiners want to see that the condition is managed, not that it disappears.

What Disqualifies Drivers

Certain conditions like uncontrolled diabetes, severe heart disease, or seizures within the past five years can stop certification. Some drivers receive a shorter card or must provide extra documentation from specialists.

If you receive a denial, ask the examiner for the exact reason and next steps. Many issues can be addressed with treatment and follow-up testing.

After You Pass

Your medical card must stay with your CDL. Keep a copy in your truck and track the expiration date. Renew early so you never face downtime.

If you're just starting out, check our guide on how to get a CDL to line up the medical exam with the rest of the licensing process.

Staying healthy between exams helps too. Regular check-ups, decent sleep, and managing weight all make the next physical easier.

iMOGL's Market Intelligence tool shows current demand for drivers who already hold valid medical cards, so you can target the right opportunities.

Find roles that match your certifications and schedule on our job board. Many fleets value drivers who keep their paperwork clean and current.

Pass the exam once with good preparation and you set yourself up for steady work without medical surprises.