Ignition Interlock Devices in Maryland

When is an IID Authorized?

Maryland has authorized the use of ignition interlock devices (IIDs) for certain drivers convicted of alcohol related driving offenses.

When are IIDs Authorized?

Maryland courts authorize the installation and maintenance of an IID as a condition of probation. The court may authorize a defendant for one to three years to operate a vehicle equipped with ignition interlock devices. If a defendant registers a BAC of 0.15 or more, the court must authorize ignition interlock for at least one year.

 What’s an IID?

An IID connects to the vehicle dashboard and the driver breaths into the device prior to starting the vehicle. If the IID detects a BAC above the limit programmed the device (typically calibrated at .02%), then the engine won’t start. Read more about ignition interlock devices (IIDs).

Where Can I Find an IID Provider?

IID providers are approved for installation throughout Maryland. You can find a list of approved IID providers at the Maryland DMV website.

Who Pays For it?

In almost all cases the driver who has been convicted of a DUI/DWI pays for the installation and lease of the ignition interlock system. You can expect to pay up to $100 for installation (although some companies offer free installation) and between $75-$120 per month for the lease. This is a rough estimate and your price may be higher or lower depending on your location.

 

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