Over 40% of deceased drivers in vehicle crashes test positive for THC: Study

Post by mattmaroon » Sat, Dec 20, 2025, 10:44 PM UTC

Youden wrote: post #114

tokai wrote: post #13

An issue with having the legal limit at ~2-5ng/ml is that it makes habitual users be over the limit if they have smoked recently or not.[0] Making the prohibition seem unserious to some, not about safety but about punitive control, and in turn making it matter less if you smoke and drive as you are taking the risk of getting into trouble in any case. The impairments of driving under the influence of alcohol have been…

There was a larger discussion in a previous thread on this topic: https://news.ycombinator.com/item?id=45494730 Since then, [0] has been published and I think it's worth at least a skim. Since it's quite recent the introduction summarizes some of the most recent research. The things that jump out at me are: - [0]: Habitual users with baseline concentrations above legal limits perform just as well as habitual users wi…

Post by jazzyjackson » Sat, Dec 20, 2025, 10:45 PM UTC

temp0826 wrote: post #219

xnyan wrote: post #196

Earlier quoted context omitted.

Unless you live in NYC or a handful of other places, an adult in the US who can't drive (or afford to pay someone to drive for them) is in the equivalent of economic-social prison. Almost all personal transportation infrastructure is designed around car travel, anything else is at best an afterthought and at worst impossible. Don't get it twisted, I agree with you. The US is far too tolerant of dangerous driving. We…

I'm just shocked that you can have that many offenses and not be in jail. I nearly lost my license in high school with FAR less than 30 incidents. That amount of leeway just doesn't make sense at all, you're so obviously a danger at that point.

Post by jeremyjh » Sat, Dec 20, 2025, 10:45 PM UTC

wiml wrote: post #214

Aurornis wrote: post #159

Some helpful context: The number of Americans age 12 and older who report using any marijuana product at least once in the past year is around 20% (Source https://apnews.com/article/marijuana-cannabis-alcohol-use-di... ) if I use one of the highest reported use numbers I can find. Even if you dismiss all of the questions brought up in these comments like the use of mean levels instead of median, not accounting for to…

The number of people who report using it is only a rough proxy for the number of people who are using it, though.

Post by machinationu » Sat, Dec 20, 2025, 10:50 PM UTC

graeme wrote: post #244

bookofjoe wrote: post #227

Earlier quoted context omitted.

DEAD people

If the population of dead drivers with over the limit THC is 40%, and this dramatically exceeds the population average, that would strongly suggest the THC level IS an indicator of either: 1. Impairment from THC, or 2. Worse than average driving and risk management skills in those who use the drug

Post by Retric » Sat, Dec 20, 2025, 10:53 PM UTC

graeme wrote: post #244

bookofjoe wrote: post #227

Earlier quoted context omitted.

DEAD people

If the population of dead drivers with over the limit THC is 40%, and this dramatically exceeds the population average, that would strongly suggest the THC level IS an indicator of either: 1. Impairment from THC, or 2. Worse than average driving and risk management skills in those who use the drug