Not all drug users are addicts but addicts, especially functioning ones, are doing the day to day stuff everyone else does.
Doesn’t matter if we like it or not scientists are trying to develop a THC test for driving in legal states. It’s going suck for a lot of people until they get it right.
FYI, I believe in a form of decriminalization for drug use. I call it carrot or stick.
It’s absurd to think that most people who do other types of drugs are willing to drive while intoxicated while they aren’t while drunk.
My personal experiences in high school and college lead me to believe a lot of people think it’s ok to smoke and drive and to some extent do other things. While they will avoid drunk driving just because it’s much easier to detect alcohol.