I’m not against better public transportation systems and I think they would help. But I also think that is a completely different conversation from the OP. Better transportation is a passive way to tackle the issue by making it easier to go get drunk somewhere besides home.Lowering the blood alcohol limit is a direct way to tackle the issue by lowering the allowed threshold creating more direct consequences. I know people who got DUIs because they only had one or two drinks and thought they were under the limit. If the limit is more difficult to stay under then less people will try and more people will be held accountable when caught

Kind of like how no one should commit murder so we make it illegal with no wiggle room to create direct consequences. People are more likely to do the right thing when there are direct consequences and not just more access to make the right decision.