Tennessee Permit Practice Test

What is the legal blood alcohol concentration (BAC) limit for drivers over 21 in Tennessee?

1. 0.02%

2. 0.05%

3. 0.08%

4. 0.10%

The correct answer is: 0.08%

In Tennessee, the legal blood alcohol concentration (BAC) limit for drivers over the age of 21 is set at 0.08%. This standard aligns with the national guideline that aims to reduce impaired driving, thereby enhancing road safety. A BAC of 0.08% indicates that a driver has consumed enough alcohol to potentially impair their judgment and reaction times, leading to an increased risk of accidents. It's important to note that drivers can face penalties if they are caught operating a vehicle with a BAC at or above this limit, which can include fines, license suspension, and other legal consequences. Understanding this limit is crucial for all drivers, as it helps them to make informed decisions about alcohol consumption and its effects on their driving capabilities. Lower BAC limits, such as those represented in the other choices, may pertain to specific groups such as commercial drivers or younger, inexperienced drivers, but for the general population over 21, the limit remains firmly at 0.08%.