The bill proposes amendments to the General Laws in Chapter 31-27, which deals with motor vehicle offenses, specifically focusing on driving under the influence (DUI) of intoxicating substances. It revises the conditions under which evidence of intoxication may be admissible in court and details the penalties for first-time offenders based on their blood alcohol concentration (BAC) levels or the presence of controlled substances. The bill removes the defense of legal entitlement to use alcohol or drugs and makes the use of an ignition interlock system mandatory for certain periods following a conviction. It also outlines fines, community restitution, imprisonment, and license suspension durations based on the severity of the offense. The bill includes insertions that mandate new minimum and maximum periods for ignition interlock systems and/or blood and urine testing for individuals convicted of DUI offenses, with specific durations based on the number of offenses and BAC levels.

Furthermore, the bill specifies the process for handling individuals who refuse to submit to chemical tests, including immediate license suspension and mandatory use of an ignition interlock system for a period of not less than six months after the initial suspension. It introduces an additional $100 assessment fee to be paid to the ignition interlock fund by violators and outlines increased penalties for repeat offenders. The bill also includes provisions for motorists seeking a conditional hardship license, detailing the requirements for testing and the consequences for non-compliance. Additionally, it establishes an "Ignition Interlock System Fund" to assist indigent defendants and requires that the ignition interlock system be equipped with a camera to identify the driver providing a breath sample. The act would take effect upon passage, with all offenders contributing to the fund.