DUI suspension; clarify how the 120 days are counted.

This Mississippi bill clarifies how the 120-day driver's license suspension for DUI convictions is calculated, specifying that the suspension period begins 21 days after a conviction or non-adjudication. It also establishes stricter penalties for drivers under the legal drinking age, including longer suspension times and mandatory interlock-restricted licenses for repeat offenders. The legislation updates administrative procedures to ensure consistent application of these timelines and penalties across the state.