Ignition Interlock Device (IID)- Will I be requiured to have one?

An Ignition Interlock Device, sometimes called an IID, can be ordered in cases where a driver was convicted of driving while impaired and had blood alcohol content (BAC) of 0.15 or higher. Offenses such as the operation of a commercial vehicle; subsequent DWI-related offenses within seven years of the first offense; habitual impaired
driving and manslaughter or negligent homicide while impaired driving may all be factors in a case.

An IID has a limit which is set as required by law. The basic principle is that drivers are required to blow into the IID and if the BAC is higher than the pre-set limit the vehicle will not start. Simply, it is a safety measure to ensure that drivers are unable to actually start the vehicle while intoxicated.

The pre-set limit of the IID is determined in a scale relative to the level of conviction. For example, cases involving a BAC of 0.15 or higher, would require that the IID be installed with a 0.04 limit. If the driver is convicted of another offense within seven years of their first offense or convicted of habitual impaired driving, the IID will be set to a 0.00 limit. If the offender is convicted of driving a commercial vehicle with a BAC of 0.15 or higher, manslaughter due to DWI or negligent homicide due to DWI, the IID is installed
with a 0.00 limit.

It is a complicated matter! The attorneys at The Twiford Law Firm are available to discuss these and other issues with you when needed. Call The Twiford Law Firm at 252-338-4151