Before I write anything else, I want to be clear about one thing – driving under the influence of marijuana is not a great idea. It can affect your judgement and reaction time, and depending on what strain you smoked, can make you either hazy and dazey or paranoid and lazy. You're better off staying home and ordering Postmates than driving over to OnCue.
That being said, driving high is not as bad as driving drunk. In fact, according to The Marshall Project, driving while high is equated to driving with .01 to .05 blood alcohol content. That sounds about right to me. It's also not as bad as texting and driving. According to a basic Google search, that's actually more dangerous than drunk driving.