When my husband was a teenager, he was “warned” by the police for riding a horse while drunk.
I visited a communist country in the late 70s and there if you drank any alcohol when driving and were caught you went to prison, so the young professionals I was with didn’t at all. Made up for it when not driving though.
In a way it would be simpler if there was a 0 limit, then everyone would know simply not to even try to drink and drive.
