What is the legal blood alcohol concentration (BAC) limit for drivers over 21 in Illinois?

In Illinois, the legal blood alcohol concentration (BAC) limit for drivers over 21 is 0.08%. This limit is established to enhance road safety and reduce the number of alcohol-related accidents. If a driver's BAC is at or above this level, they are considered legally impaired and can face severe penalties, including fines, license suspension, and possible imprisonment.

This legal standard reflects research indicating that at a BAC of 0.08%, cognitive and motor functions are significantly impaired, which poses a heightened risk for safe driving. By setting the threshold at this level, Illinois aims to promote responsible drinking and driving behavior to protect both the driver and other road users. Understanding this limit is crucial for all drivers to ensure they stay within legal boundaries when consuming alcohol.