DUI in Tennessee
State-specific overview · Criminal Law
Tennessee imposes DUI penalties starting at 0.08% BAC, with mandatory ignition interlock devices for most convictions.
How Tennessee treats DUI
Tennessee law generally follows the federal 0.08% BAC standard for drivers 21 and older under TCA 55-10-401. Most DUI convictions require installation of an ignition interlock device on the offender's vehicle, even for first offenses in some cases. Tennessee also recognizes 'implied consent' laws, meaning refusing a breath or blood test results in automatic license suspension and additional penalties.
The general definition of DUI
Driving under the influence of alcohol or drugs, a serious criminal offense.
DUI stands for Driving Under the Influence and means operating a vehicle while impaired by alcohol, drugs, or both. You can be charged with DUI even if your blood alcohol level is below the legal limit if your driving is noticeably impaired. Penalties vary by jurisdiction and whether it's a first or repeat offense, but typically include fines, license suspension, jail time, and mandatory alcohol education programs. A DUI conviction has lasting effects on insurance rates, employment, and your driving record.
Read the full DUI entry →This page is a plain-English reference and is not legal advice. State laws change frequently. For specific situations consult a licensed attorney in Tennessee.