After a DUI or DWI conviction, most states require you to get an SR22 and ignition interlock device (IID) to reinstate your license. An ignition interlock is an alcohol detection device (breathalyzer) that connects to your vehicle’s ignition. The breathalyzer analyses your breath alcohol concentration (BrAC). Your car will start only if your breath sample contains no alcohol. In addition to SR-22 or FR-44 insurance, drivers with DUI/DWI convictions will likely require an ignition interlock device. Most states consider blood alcohol concentration (BAC) level and the number of DUI/DWI violations when ordering an IID installation.
The IID has a mouthpiece that requires drivers to blow into it. If your breath sample contains alcohol, your vehicle won’t start.
Some drivers install an ignition interlock device to help ensure sober driving voluntarily. A voluntary IID installation protects the driver and others on the road from future DUI/DWI violations that could result in injury or death.
