This letter brief summarizes a case in which the defendant, Dan Defendant, was charged with driving while under the influence of a controlled dangerous substance and driving while impaired. The defendant was pulled over by Officer Dirt after a 911 call. Officer Dirt observed signs of intoxication from the defendant and administered field sobriety tests, which the defendant failed. The defendant was then evaluated by a drug recognition expert, Officer Cop, who determined the defendant was under the influence of a central nervous system depressant. A urine test found the defendant had prescription medications in his system. At trial, an expert witness testified some of the medications were habit-forming. The defendant was found guilty of driving while impaired but not under the influence of a