An Interlock Ignition Device (IID) is a machine that is internally connected (“interlocked”) into your motor vehicle’s ignition. Unless you blow into a tube that runs to the machine and blow below a predetermined breath alcohol level (BAL), your vehicle will not start. Furthermore, to ensure that you did not have someone else blow on your behalf just to get you on the road, you must retest at given intervals while the vehicle is moving (“rolling retest”) or the vehicle will stall.
For the purpose of Illinois DUI law there are two types of driving privileges that stem from an IID. One of these is known as a Breath Alcohol Interlock Ignition Device (BAIID); the other, a Monitoring Device Driving Permit (MDDP). Both of these permissions to drive require use of the same type of IID, but which of the permissions applies depends upon the status of your Illinois driving privileges.
This requires an understanding of the differences between driver’s license suspensions and revocations and between administrative sanctions and criminal consequences. A suspension represents a temporary removal of your driving privileges for a specified period of time. When the suspension time ends, your driving privileges will be restored upon payment of the appropriate fee, unless your driving privileges are otherwise invalid.