Oregon law requires an ignition interlock device (IID) for drivers who have been convicted of driving under the influence of intoxicants. The key word in this requirement is "convicted." An IID is not required for people who avoid a conviction. This means IID are not required if a driver completes diversion. Although an IID is not required following an administrative suspension, one is required to get a hardship permit.
In order to reinstate a license after a DUI conviction a driver will be required to install an IID on his car. The IID will be required for one year following the first conviction and two years following the second conviction. Ignition interlock devices are provided by third party businesses. Drivers are typically required to lease the devices from the providers as well as paying for installation.
Ignition interlock devices work by attaching a portable breath tester to the ignition system in the car. The driver is required to blow into the device in order to start the car. The driver is also periodically required to blow into the device while the car is running in order to keep the car running.
Because of the problem of false positives, people who have ignition interlock devices installed on their cars should avoid any form of alcohol. Mouth alcohol from mouthwash or cough medicine could potentially cause a false positive on an IID.
