Under Title 21, what is the legal BAC (Blood Alcohol Content) limit for drivers over 21?

The legal Blood Alcohol Content (BAC) limit for drivers over the age of 21, as established under Title 21, is 0.08%. This limit is significant because it represents the threshold above which a driver is considered impaired by alcohol and is subject to legal penalties for driving under the influence (DUI). Law enforcement agencies and courts rely on this standard to determine impairment levels, ensuring that drivers maintain a level of sobriety that enables them to operate vehicles safely.

Choosing a lower limit, such as 0.05%, does not align with the widely recognized standards for legal intoxication for adult drivers, while a limit of 0.10% or higher also fails to meet the established legal framework for impairment. A BAC of 0.08% effectively balances road safety concerns with personal freedoms, as it provides a clear benchmark for enforcement and public awareness regarding the dangers of drinking and driving.