What is the legal blood alcohol concentration (BAC) limit for driving in most states?

The legal limit for blood alcohol concentration (BAC) while driving in most states is set at 0.08%. This standard is based on extensive research showing that impairment begins to significantly affect a person's ability to operate a vehicle safely at this level. At a BAC of 0.08%, individuals may experience reduced coordination, difficulty focusing, and impaired judgment, all of which can lead to dangerous driving conditions.

For context, some states may have lower limits for specific groups, such as commercial drivers or individuals under the legal drinking age, but the general legal limit of 0.08% is widely recognized as the point at which a driver's ability to operate a vehicle is compromised. This standard is implemented to enhance road safety and reduce accidents related to impaired driving.