DUI laws

DUI laws (Driving Under the Influence) prohibit operating a vehicle while impaired by alcohol or drugs. Legal limits for blood alcohol concentration (BAC) often set at 0.08% for adults can result in penalties such as fines, license suspension, or imprisonment. Drivers may face harsher consequences for repeated offenses or if impaired significantly. States may also enforce "zero tolerance" for underage drivers (typically under 21) and commercial drivers. Police can conduct roadside sobriety tests, and refusal to take these tests may lead to automatic penalties. Laws vary by state, emphasizing public safety on the roads.