Andrew Adell of Hazlet, who served with the Manalapan police department, had pleaded guilty in December to drunken driving and assault by auto in connection with the March 6 crash in Colts Neck.
He agreed to give up his job as part of a plea deal with Monmouth County prosecutors and had his driver's license suspended for seven months.
The head-on collision injured 41-year-old Robert Felix of Keansburg, who was on his way to work at the time. His injuries have required two surgeries and a lengthy hospital stay.
The 31-year-old Adell was also injured in the crash.