[Poshua]

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tuq-
.08 is the point where skills are proven to deteriorate. study after study has shown this

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Ikestoys, what on earth could this mean? It's not binary like, .07 you're safe, .08 you're dangerous. As BAC goes up, driving impairment increases, across the scale.

The legal limit is a necessity for enforcement, but the number is an artificial creation, and will always be something of an arbitrary choice. The choice is based on balancing two interests, (1) allowing people to drive after normal drinking activities where they create little or no danger for the public, and (2) protecting the public from drivers who are at heightened risk for causing accidents. Picking the number involves deciding the correct balance of those interests; no number can be determined by science (or any other means) to be "the" correct BAC limit.

I say this independently of whether .08 is a good policy choice (I am undecided about whether lowering the limit from .1 was a good idea).