A DUI, or Driving Under the Influence, is a legal term used to describe the act of operating a vehicle while impaired by alcohol or drugs. Each state has specific laws defining the legal blood alcohol concentration (BAC) limit, typically set at 0.08% for adults. If a driver exceeds this limit, they can face serious legal consequences, including fines, license suspension, and even jail time. DUIs are a significant public safety concern, as impaired driving increases the risk of accidents and injuries on the road. Law enforcement agencies often conduct sobriety checkpoints and use breathalyzer tests to identify and apprehend drivers who are under the influence. Education and prevention programs aim to reduce the incidence of DUIs and promote safe driving practices.