What is the legal BAC (Blood Alcohol Concentration) limit for driving in most states?

The legal BAC limit for driving in most states is 0.08%. This standard has been adopted widely in the United States, reflecting a balance between ensuring public safety and allowing individuals some leeway to enjoy alcoholic beverages. When a driver's BAC reaches this level, their ability to operate a vehicle is significantly impaired, affecting coordination, judgment, and reaction times.

This threshold is supported by extensive research showing that drivers at or above this BAC level are more likely to be involved in accidents. Consequently, law enforcement agencies and policymakers have established this limit to keep roadways safer. Additionally, some states have stricter limits for particular groups, such as commercial drivers and those under the legal drinking age, reinforcing the importance of this standard among the general public.