What Blood Pressure Fails a DOT Physical?

DOT blood pressure rules every CDL driver should understand before their medical exam

The Short Answer

If a driver's blood pressure reaches 180 / 110 or higher, they usually cannot receive a DOT medical card that day. The examiner will normally require the driver to lower their blood pressure and return for re-evaluation.

DOT Blood Pressure Certification Chart

This chart shows how blood pressure levels typically affect CDL medical certification.

Blood Pressure Reading	Typical DOT Medical Result
Below 140 / 90	Up to a 2‑year DOT medical card
140‑159 / 90‑99	Usually a 1‑year DOT medical card
160‑179 / 100‑109	Often a temporary 3‑month DOT card
180 / 110 or higher	Driver usually cannot be certified that day

Why Blood Pressure Matters for CDL Drivers

Commercial drivers operate large vehicles on public highways. Severe high blood pressure increases the risk of stroke, heart attack, or sudden medical emergencies while driving. Because of this, DOT medical examiners must ensure that drivers are medically safe to operate a commercial vehicle.

What Happens If Your Blood Pressure Is Too High?

You may receive a temporary 3‑month DOT medical card
You may be asked to follow up with your primary doctor
You may return for re‑evaluation after improving your blood pressure
Once controlled, drivers often qualify for a longer certification

How Drivers Can Prepare Before a DOT Physical

Avoid energy drinks or heavy caffeine before the exam
Take blood pressure medication as prescribed
Drink water and arrive early so you can relax
Track your blood pressure for several days before the exam
Bring documentation from your primary doctor if needed

Helpful resource: Free DOT Blood Pressure Tracking Chart (Printable PDF)

Related DOT Physical Guides

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