Research on effectiveness of laws shows that lowering the BAC changes behavior at all BAC levels, by reducing driving after drinking, so it is an effective intervention for preventing driving at both high and low BAC levels. Lowering the national standard from . 08 to . 05 could save 538 lives each year.

Should the legal BAC limit be lowered?

The answer is that with a lower legal limit, people don't necessarily change the amount they drink. They just don't drink and drive. Reducing the BAC limit acts as a broad deterrent. It lowers the incidence of crashes and crash deaths at all BAC levels, not just those in the narrow range between .

Can you lower BAC?

The only way to effectively reduce your BAC is to spend time without drinking. You must allow your body enough time to absorb and dispose of the alcohol.