Information from Michigan State Police
“It is a crime for a driver to have a bodily alcohol content (BAC) of .08 or greater if over age 21 or .02 or greater if under 21. In addition, Michigan has a high-BAC law with enhanced penalties for anyone caught driving with a BAC of .17 or higher. However, drivers can be arrested at any BAC level if they exhibit signs of impairment while operating a motor vehicle.”