[throwaway55421]

Drunk driving is not _that_ dangerous. Even at quite a high BAC level you end up around 10-100x more likely to have an accident. I believe that, at least in terms of personal risk, unless you're ten drinks in it's more dangerous to ride a motorcycle sober.

It's restricted because in aggregate or when done repeatedly it would be a disaster (particularly when drunk driver A interacts with drunk driver B), not because doing it once in an emergency would be problematic.

Citation: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3433627/

(at 0.08% BAC fatal accident risk is 13x - what's the risk of waiting ten minutes for an ambulance if your friend is dying?)