BAC is simply one's blood alcohol content, or the amount of alcohol found in one's bloodstream. Your BAC can be measured either by percentage by mass or by mass per volume. For example, a BAC of .20% means that you have 1 gram of alcohol per every 500 grams of blood.
In the state of Georgia, it is illegal to be driving with a BAC level of .08 or more. Police officers use three different methods for measuring one's BAC: through blood, breathe or urine tests. Law enforcement utilizes BAC to determine an individual's impairment. | Georgia Cities, Counties, and Zip Codes |