Q: What is an Ignition Interlock Device (IID)?

A:

An Ignition Interlock Device (IID) is a breathalyzer device that is installed in a vehicle to prevent it from starting if the driver has consumed alcohol. In California, individuals convicted of DUI may be ordered by the court to install an IID in their vehicle as part of their sentencing or as a condition of a restricted license. The IID requires the driver to blow into the device, measuring their blood alcohol concentration (BAC) before allowing the vehicle to start.

If the device detects a BAC over a certain threshold, the vehicle will not start. Additionally, the IID may require random retests while the vehicle is in motion to ensure the driver remains sober. Failure to comply with IID requirements or tampering with the device can result in further legal penalties, including extended periods of suspension or additional DUI charges.

California law mandates the use of IIDs for certain DUI convictions, aiming to enhance public safety by reducing the likelihood of repeat offenses. Compliance with IID installation and operation is monitored, and violations can lead to serious consequences, including extended license suspension.

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