Is it possible to be charged with a DUI for smoking marijuana?

Yes, you can get a DUI for smoking marijuana. Driving under the influence of a controlled substance is typically punishable as a misdemeanor. It is usually difficult for the prosecution to prove that you were under the influence of a controlled substance, since a breathalyzer test will not detect if you are under the influence of drugs. Therefore, it is near impossible for a prosecutor to determine how much drugs you had consumed and whether that amount was significant enough to inhibit your driving abilities.