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Breath Alcohol Ignition Interlock Device

What is a BAIID?

A Breath Alcohol Ignition Interlock Device, or BAIID, is a device installed in a vehicle that measures a driver’s breath alcohol content. Users must provide the BAIID with a sample breath that is negative for alcohol in order to start your vehicle. Some states also require a BAIID to capture the image of the driver as he or she performs the breath test.  

Ignition interlock devices, or BAIIDS, are required for DUI offenders in most states. 

Click here to check the laws in your state.

Who receives a BAIID and why?

Depending on your state’s regulations, you may be required to install a BAIID in your vehicle after a first or consecutive alcohol-related traffic conviction.

Click here to check the laws in your state.

What to expect with your BAIID:

Once the BAIID device is installed, the driver must provide the BAIID with an initial blow to start the vehicle. He or she must also provide breath samples throughout the trip. Any person driving the vehicle, regardless of driving history, must use the BAIID. The device records the results of each trip.


How does a BAIID work?

Installed in the ignition of a vehicle, the BAIID prevents a driver from starting his or her car if the breath sample registers a breath alchohol content higher than the legal limit set by your state.