What is Blood Alcohol Concentration (BAC)? BAC refers to the percentage of alcohol in a person's bloodstream. A BAC of 0.10% means that an individual's bloodstream contains one part alcohol for every ...

The teenage driver who was killed along with two friends in a fiery Cybertruck crash in California last year tested positive for cocaine and had a blood alcohol level more than twice the legal ...

Research shows that impairment begins long before a person reaches the blood alcohol concentration necessary to be guilty of driving under the influence. In all 50 states, the legal limit for drunk ...