What are Mississippi’s legal blood alcohol limits?

On Behalf of | Mar 31, 2025 | DUI |

Knowing the BAC limits is something every driver should understand to stay safe and avoid potential legal trouble when they get behind the wheel. Mississippi law sets clear guidelines to ensure safe driving, and knowing these limits can help you avoid serious consequences.

BAC limits for drivers

In Mississippi, the legal BAC limit for most drivers is 0.08%. If your BAC reaches or exceeds this level, the law considers you legally intoxicated. This standard applies to drivers who are 21 years old or older. Driving with a BAC of 0.08% or higher can lead to DUI charges, which may result in fines, license suspension, mandatory classes, or even jail time.

BAC limits for commercial drivers

Commercial drivers face stricter BAC limits. For individuals operating a commercial vehicle, the legal limit is 0.04%. Commercial drivers must meet higher standards because of the size and potential danger of the vehicles they operate, which can pose more significant risks on the road. Even small amounts of alcohol can impair their ability to safely drive a commercial vehicle.

BAC limits for underage drivers

Mississippi enforces a zero-tolerance policy for drivers under the age of 21. If an underage driver has any measurable amount of alcohol in their system, they can face DUI charges. The legal BAC limit for minors is 0.02%, which helps reduce the risks of alcohol-related accidents and promotes safer driving habits among young people. 

Understanding the BAC limits keeps you within the law and helps you make safer driving choices. Whether you’re an adult, a commercial driver, or underage, knowing your limits is key to staying safe.