Blood Alcohol Concentration (BAC) Limits

Adult Operators of Noncommercial Motor Vehicles

Laws addressing blood alcohol concentration limits applicable to drivers of noncommercial automobiles, trucks, and motorcycles who have reached the legal drinking age of 21 years.

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Changes Over Time for Adult Operators of Noncommercial Motor Vehicles
Jurisdiction Date Range BAC Limit Per Se Citations
TN (Tennessee)
1/1/1998 - 6/30/20030.10Yes1 Citations
TN (Tennessee)
7/1/2003 - 1/1/20180.08Yes2 Citations