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Commercial License and DUI in Maryland

In Maryland, although the BAC limit for drivers is 0.07 for DWI and 0.08 for DUI, Commercial drivers are held to a blood alcohol content (BAC) limit of .04. A person who drives or attempts to drive a commercial motor vehicle while the person’s blood or breath is 0.04 or greater will be disqualified from driving a commercial motor vehicle for one year.

A person who refuses to submit to alcohol breath testing while driving a commercial motor vehicle or while holding a commercial motor vehicle license will be disqualified from driving a motor vehicle for one year.

A person will be disqualified from driving a commercial motor vehicle for a period of one year if the person is convicted of a DUI or DWI while driving a commercial motor vehicle or while driving a non-commercial motor vehicle.

A person will be disqualified from driving a commercial motor vehicle for life for committing 2 or more of the above mentioned offenses (i.e. DUI/DWI, driving a commercial vehicle with a BAC of .04, etc.) A person with a lifetime disqualification may apply for reinstatement of his commercial driver’s license after 10 years.

If a driver commits a DUI/DWI white transporting hazardous material, he will be disqualified from driving a commercial motor vehicle for three years. (See § 16-812).


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