Tennessee DUI Laws
Tennessee DUI Defense
What you're facing, what the deadlines are, and the questions your attorney needs to answer — specific to Tennessee (TN) law.
BAC Limit
0.08
Enhanced BAC
0.20
Higher penalties above this
Lookback Period
10 years
Prior offenses count within
First Offense Penalties in Tennessee
Implied Consent & Test Refusal
Like all 50 states, Tennessee has an implied consent law — by driving on Tennessee roads, you've already agreed to submit to a chemical test (breath, blood, or urine) if an officer has probable cause to believe you're impaired.
Refusal Penalty
1-year license revocation
Tennessee-Specific Detail
Tennessee has a mandatory minimum 48-hour jail sentence with no exceptions — even for first offenses. If BAC is 0.20+, the mandatory minimum increases to 7 days. Tennessee requires IID for all DUI convictions.
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Important: This page provides general legal information about Tennessee DUI laws as of the date of publication. Laws change frequently. This is not legal advice. Consult a Tennessee-licensed attorney for guidance specific to your case.