what is the legal legal drinking limit for driving
For instance, a BAC of 0.10 means that 0.10% (one tenth of one percent) of a person's blood, by volume, is alcohol. All 50 states (except AZ - see * below) have now set .08% BAC as the legal limit for Driving Under the Influence. For commercial drivers, a BAC of .04% can result in a DUI conviction nationwide. For those under 21, there is a zero tolerance limitâany amount of alcohol is grounds for a DUI arrest.