What Is a DOT Physical?

Medically Reviewed by Dan Brennan, MD on June 16, 2021

A Department of Transportation (DOT) physical is a physical exam that is required of people who drive commercial vehicles. The point of a DOT physical is to make sure that people who are driving commercial motor vehicles are physically, mentally, and emotionally fit. The Federal Motor Carrier Safety Administration (FMCSA) requires them for the safety of the public.  

You will need a DOT physical if you: 

  • Drive a vehicle designed to carry more than 15 people.
  • Are paid to drive a vehicle designed to carry more than 8 people.
  • Carry hazardous material in your vehicle that requires your vehicle to have a placard.
  • Drive a vehicle on the interstate with a gross combination weight rating, gross vehicle weight rating, or gross combination weight of over 10,000 pounds. 

The health care provider who performs your DOT physical will ask you detailed questions about your medical history, including: 

  • If you've ever had surgery 
  • Any medicines you're taking, including prescription and over-the-counter medicines
  • Any health problems you've had
  • If you use tobacco, alcohol, or illegal substances
  • If you've ever failed a drug test
  • If you've ever been dependent on an illegal substance
  • Any symptoms you're currently having

You will have a hands-on physical that includes checking your:

You'll also have to have a urinalysis to check for protein, blood, sugar, and specific gravity. These tests can tell your doctor if you need additional tests to check for other medical problems. You may also have to have other tests if your doctor thinks they're necessary.

You may also need to have a sleep apnea test if you have symptoms of obstructive sleep apnea, which is a disorder where you periodically stop breathing while sleeping. Symptoms of sleep apnea can include: 

  • Heavy snoring
  • Gasping for breath during sleep
  • Dry mouth or sore throat in the morning
  • Morning headaches
  • Daytime sleepiness

DOT Physicals can only be performed by health care professionals who are certified by the FMCSA. You can search for a licensed medical examiner here. Licensed medical examiners may be:

  • Doctors of medicine (MD)
  • Doctors of osteopathy (DO)
  • Physician assistants (PA)
  • Doctors of chiropractor (DC)
  • Advanced practice nurses (APN)

You can fill out the driver's portion of the exam at home if you want to save time on the day of the physical. You will also need to bring:

  • A list of all of your doctors' names and addresses
  • A list of all of your medicines, including the dosage
  • Your glasses, contacts, or hearing aids, if you use them
  • A record of your blood sugar readings and your most recent Hgb A1C if you have diabetes
  • A record from your CPAP machine showing proper use for at least 90 days if you have sleep apnea
  • A letter from your cardiologist indicating you're safe to drive a DOT physical if you have heart issues
  • The results of recent heart tests, if you've had them
  • A letter from your neurologist if you've had a stroke, a brain tumor, seizure disorder, or bleeding in the brain 
  • A letter and medical records from your doctor if you're taking any medicines that can cause sleepiness or are controlled substances
  • A letter from your doctor if you've lost permanent use of an arm or leg, including any work restrictions 
  • A letter from your doctor and a recent blood level and clearance test if you're taking the blood thinner Coumadin 

Conditions that may disqualify you from passing a DOT physical are those that interfere with your ability to drive safely. If something affects your hearing or vision, it could cause you to have an accident. You also may not be safe to drive if you have a condition that could cause you to lose consciousness or become dizzy. Such conditions can include:

Some of these conditions will be left up to the medical examiner's judgment as to whether to qualify you or not. You may be able to get an exemption or waiver from the FMCSA for certain conditions. Sometimes you may be disqualified until you bring a medical condition under control. If you are able to resolve a disqualifying condition, you can reapply for certification.

Show Sources


Concentra: "Do I Really Need a Sleep Apnea Test?" "DOT PHYSICAL REQUIREMENTS," "What to Bring to a DOT Physical Exam."

Federal Motor Carrier Safety Administration: "DOT Medical Exam and Commercial Motor Vehicle Certification," "Part 391."

Govinfo.gov: "Electronic Code of Federal Regulations."

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