Watch ‘LivePD’ more people are driving under the influence of Pot than of alcohol. Its become a joke watching the show, and counting the amount of times the Cops smell grass during the pullovers.
I watch that show religiously and the drivers pulled over who are found to have marijuana either in the car, on their person, or had recently smoked, were pulled over for other reasons besides erratic driving.
You don't typically see those drivers pulled over for erratic driving.
My experience is that pot smokers feel that it is OK to smoke all day long. They can toke up at breakfast and keep it up all day. I don’t know any drinkers like that. My BIL is that way with weed and he works in a sawmill.
Weed messes with your reaction times. I always felt about 3 beats slower when I used it in college.