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Maryland has a number of intoxicated driving classifications. But they can be separated into two main types: DUIs (driving under the influence) and DWIs (driving while impaired).

Driving under the influence. A person can be convicted of a DUI for driving or attempting to drive while impaired to a substantial extent by alcohol or a controlled substance or with a blood alcohol concentration (BAC) of at least .08%. 

Driving while impaired. The level of impairment the prosecution must prove to get a DWI conviction is lower evidentiary than that for a DUI. A DWI only requires proof that the driver’s normal coordination was impaired to some extent by alcohol or drugs.

  1st Offense 2nd Offense 3rd Offense
Up to 1 year
Up to 2 years Up to 5 years
Up to $1000
Up to $2000 Up to $5000
License Suspension
Up to 6 months
Up to 9 months Up to 12 months