The Oregon State Police is the regulatory authority of ignition interlock devices, interlock service technicians, and interlock service centers throughout Oregon. The Oregon State Police's ignition interlock program, operated out of the Patrol Services Division, consists of law enforcement officers and support staff dedicated to interlock compliance and public safety.
A breath alcohol ignition interlock device (BAIID, also known as an IID) is attached to the vehicle's ignition. It is designed to prevent a motor vehicle from being operated by a person who has consumed an alcoholic beverage. When properly installed and calibrated, the IID will prevent a driver from starting a motor vehicle if the device detects a breath alcohol concentration (BrAC) above the prescribed setpoint.