“Driving under the Influence” (DUI), is the term used in Canada since 1921, to describe the criminal offense of operating a motor vehicle, while the person’s ability is impaired by alcohol or drugs.” If your BAC registers .08 or you have a blood test result that exceeds .08, it is punishable under the Criminal Code in Manitoba. “Driving While Impaired” includes: Swerving, weaving; jerky, sudden movements, failure to follow traffic signs and signals, tail-gaiting, or mishandling of vehicle equipment. Women are more vulnerable to the effects of alcohol due to differences in metabolism.