Tennessee Permit Practice Test

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Driving under the influence (DUI) for a first conviction is determined by which blood alcohol concentration?

  1. .05%

  2. .08%

  3. .50%

  4. .70%

The correct answer is: .08%

In Tennessee, driving under the influence (DUI) for a first conviction is determined by a blood alcohol concentration (BAC) of .08% or higher. This legal limit is set to ensure the safety of all individuals on the road by preventing impaired driving. Option A (.05%) is below the legal limit for DUI in Tennessee. Options C (.50%) and D (.70%) are significantly higher than the legal limit and would indicate severe impairment, well above the threshold for a first DUI conviction in the state. Remember, it is always safest to have a designated driver or use alternative transportation if you have been drinking.

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