What is the legal limit for blood alcohol content (BAC) for drivers over 21 years of age?

The legal limit for blood alcohol content (BAC) for drivers over 21 years of age is 0.08%. This standard is widely recognized across many states, including Michigan, and represents the point at which a person's ability to operate a vehicle is considered impaired. At this BAC level, a driver may be more likely to experience decreased coordination, reaction time, and overall judgment, which significantly increases the risk of accidents.

Setting this limit at 0.08% allows law enforcement and the legal system to promote road safety and discourage drunk driving. Individuals can still face consequences for driving with a BAC lower than 0.08% if impaired by alcohol or other substances; however, 0.08% serves as the baseline for legal intoxication for those over the age of 21.