The bill amends R.S.39:4-50 to enhance the regulations surrounding ignition interlock devices (IIDs) for individuals convicted of driving while intoxicated (DWI). It introduces provisions that allow individuals arrested for DWI to voluntarily install an IID in their vehicle before conviction, enabling them to request a special driver's license notation that permits operation of a vehicle equipped with the device. The legislation specifies that those who install the IID and maintain a valid driver's license will not incur additional fines. Furthermore, it establishes a credit system where individuals can earn a one-day credit against their vehicle operation forfeiture period for every two days the IID is installed, although this credit is not available for violations resulting in serious bodily injury.

Additionally, the bill allows individuals required to forfeit their right to operate a vehicle to install an IID instead, granting them the same credit for installation. However, individuals convicted of operating a vehicle under the influence of narcotics or similar substances are excluded from this credit. The bill clarifies that plea agreements are permissible under certain conditions and defines substances considered narcotics or hallucinogens. It is designed to take effect immediately for offenses occurring on or after the effective date, with an expiration set for January 1, 2029, thereby providing a more flexible approach to managing DWI offenses while prioritizing public safety.