What are ignition interlock devices?

If you have been convicted of a DUI in Missouri or in many other states in the nation, you may be required to have an ignition interlock device installed in your car. These devices allow you to drive on a restricted driver’s license, yet they monitor whether you have any alcohol in your system when you attempt to start your vehicle. Ignition interlock devices are breath test analyzers that are hooked up to your vehicles ignition system. Some models have cameras that attach to the dashboard of the car. In order to start the car, you must blow into a tube that is connected to the device. The device then determines your blood alcohol content level and will only start if it is below a preset limit. If you do have a BAC level that is above the limit, the vehicle will lock you out and you will be unable to drive.

Not only are you responsible for the cost involved with installing the IID, you must also take your vehicle in for monthly maintenance appointments. In addition to ensuring the monitor is working correctly, the technician will download information from the monitor, including attempted startups, BAC levels and lockouts, and send it to law enforcement. If you have a violation, you may be instructed to keep the IID on your vehicle for an extended period of time.

In some states, all DUI offenders are required to have an IID installed in their vehicle. In Missouri, however, it is up to the judge to determine whether a first-time offender must have a device installed. If you have more than one DUI charge, you must have an IID installed for a certain period of time.

Thin information is intended to educate and should not be used as legal advice.

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