court may lower such term for each day, not exceeding 90 days, served participating in a drug or alcohol inpatient rehabilitation program approved by the Intoxicated Driver Resource Center

39:4-50 (3)For a third or subsequent violation, a person shall be subject to a fine of $1,000.00, and shall be sentenced to imprisonment for a term of not less than 180 days in a county jail or workhouse, except that the court may lower such term for each day, not exceeding 90 days, served participating in a drug or alcohol inpatient rehabilitation program approved by the Intoxicated Driver Resource Center and shall thereafter forfeit his right to operate a motor vehicle over the highways of this State for 10 years.  For a third or subsequent violation, a person also shall be required to install an ignition interlock device under the provisions of P.L.1999, c.417 (C.39:4-50.16 et al.).