What is an ignition interlock device designed to prevent?

An ignition interlock device is specifically designed to prevent a motor vehicle from operating if alcohol is detected in the driver's breath. This technology is crucial for promoting road safety, particularly for individuals who have a history of driving under the influence (DUI). When a driver attempts to start the vehicle, they must blow into the device, which measures the blood alcohol concentration (BAC). If the device detects alcohol above a predetermined threshold, the engine will not start, effectively preventing impaired driving.

This device acts as a safeguard against potential accidents caused by alcohol impairment, serving both as a punishment for offenders and a deterrent to prevent future violations. In many jurisdictions, the installation of ignition interlock devices is a part of the sentencing for DUI offenses, emphasizing their role in both rehabilitation and public safety.