Plus, seat belts, better roads and better cars. The traffic deaths have gone down nationwide despite about one hundred million more people in the country and millions more drivers since the seventies. Almost halved which is remarkable.
As far as younger people go, many times when there is a report of teens or young adults killed in an auto accident, they were thrown from the vehicle. Unfortunately, many young people hate to wear seat belts.
I dunno about the ‘less drunk driving.’ Every week, if not more, you hear of someone being arrested for their FIFTH or SIXTH or TENTH DUI Offense.