It can be difficult for a marijuana user to subjectively assess their level of impairment. Even worse, there is no way for a marijuana user to objectively evaluate their level impairment. So, after consuming marijuana medically or recreationally, how can a marijuana user make a safe decision about driving?
Before we get to that question, let’s do a quick review of Michigan’s OWI laws as it relates to drugs. In Michigan, you can be charged (and potentially convicted) if you are either impaired or intoxicated by alcohol, drugs, or any combination thereof. Specifically, Michigan’s OWI law references impairment or intoxication caused by alcohol, controlled substance or “other intoxicating substance.” See Michigan Compiled Laws Sec. 257.625.
Notably, the statute does not define either the word intoxicated or impaired, leaving that factual determination to the fact finder, which is usually a jury of 6 or 12 individuals, depending on if the case is a misdemeanor or a felony. To assist the jury in reaching this determination they will be given several standard jury instructions.