Officers say Gary Kincaid was driving without headlights on Highway 41 near Bullard Avenue.
Kincaid was pulled over around 10:00 p.m. Friday night by the highway patrol. Officers say they realized Kincaid was driving in a Reedley Police Department unmarked patrol vehicle.
Authorities say he was off-duty at the time of this incident.
During the traffic stop officers conducted a DUI investigation and placed Kincaid under arrest.
He was cited and released on scene to a sober party.