Impaired has varied connotations.
Booze, reaction time, drunken stupor, etc.
High on weed, I don't know, I never experienced it.
Texting on cell phone, eyes off the road. Result is as fatal as the drunk so really, what is the difference, the motive? Is is a "hate crime"? Oh my the dreaded hate crime. Are not all crimes a mean spirited act against someone generally? Anyway, don't want to open a new can of worms when the current can is sufficient.
Driving while eating, doing your nails (hoping no one here is guilty of that one), driving while picking your nose, driving while shouting at the kids in the back seat (turning around and smacking one of them), driving while think of Salma Hayack dancing in From Dusk till Dawn.....that sir is DISTRACTING.