What does BAC stand for, which police use to determine levels of legal impairment?

BAC stands for Blood Alcohol Concentration. This term is crucial in understanding legal impairment, as it refers to the percentage of alcohol present in a person's bloodstream. Law enforcement agencies utilize BAC levels to assess whether a driver is legally intoxicated. In many jurisdictions, including Nevada, a BAC of 0.08% or higher is typically considered above the legal limit for driving.

This standardized measurement provides an objective way to evaluate a driver’s impairment due to alcohol consumption. By measuring BAC, police can determine if an individual poses a risk on the road based on established legal thresholds.

Other terms such as Blood Acidosis Concentration and Body Alcohol Content do not reflect established medical or legal definitions of alcohol levels in the bloodstream. Additionally, while Breath Alcohol Concentration is related, as it is measured through breath tests, the primary and most direct indicator used in law enforcement is the Blood Alcohol Concentration, which is why this term is the correct choice.