121 million self-reported episodes of alcohol-impaired driving among U.S. adults each year
Just remember, even if you are sober, driving home from a party at 3AM is still significantly more dangerous than average.
I sloppily implied causation above, but I didn't actually say 1/3 of crashes are attributable to alcohol, I said that a "big chunk" are attributable to poor decisions and separately pointed out the large percentage of fatal crashes involving alcohol.
Anyway, 1/4 is from someone with access to raw data who spent some time trying to get less biased numbers. So, wider error bars than NTSB estimates, but less biased assumptions.
Drunk driving is still a major issue, but there is a reason people are still spouting 20 year old data. When trying to make a point there is a tendency to cherry pick to the point of distortion.
Do you have a good source that tracks fault in alcohol involved collisions? (I'm not trying to argue, I'm curious to look at it)