At STEVE SMITH Trial Lawyers, our experienced criminal defense attorneys in Augusta, Maine are dedicated to helping people resolve complicated legal issues. For a comprehensive assessment of your OUI or DUI case, call today. Operating under the influence of intoxicants means that the operator has been impaired to the slightest degree. There are then two ways in which the state can prove you are operating under the influence of alcohol. The first is by means of a test result, and the second is by means of observation of operation plus other evidence of alcohol intake.