The bill amends various sections of the General Laws in Chapter 31-27, which addresses motor vehicle offenses related to driving under the influence (DUI) of alcohol or drugs. A significant insertion is the provision that these amendments will take effect on July 1, 2025. The bill establishes that individuals operating a vehicle while under the influence will be guilty of a misdemeanor, with penalties based on blood alcohol concentration (BAC) levels. It also clarifies the admissibility of evidence for intoxication, including chemical tests. The bill modifies penalties for first-time offenders, removing previous language regarding controlled substances, and mandates the use of ignition interlock systems for specified periods, along with community service and attendance in DUI-related courses.

Additionally, the bill introduces stricter penalties for repeat offenders, including mandatory ignition interlock systems and increased fines and license suspensions based on BAC levels. It emphasizes the need for alcohol or drug treatment, particularly for juveniles, who must attend special courses and may undergo clinical assessments. The bill also establishes an "Ignition Interlock System Fund" to support the implementation of these systems and introduces penalties for violations related to the interlock system. Overall, the amendments aim to enhance public safety by imposing stricter regulations and ensuring that offenders receive necessary treatment for substance abuse.