Final Report Submitted to the Iowa Department of Transportation Review of Breath Alcohol Ignition Interlock Devices Policies and Programs Final Report Submitted to the Iowa Department of Transportation February 24, 2011 Nathan Gross, MSN Daniel V. McGehee, PhD Corinne Peek-Asa, PhD Shashi Nambisan, PhD

Most states now include first-offenders in ignition interlock requirements. Many states have adopted this policy in the last two to three years.

There are validated measures that predict the likelihood of repeat offenses. Number of prior offenses Level of intoxication at time of arrest Number of interlock warnings and fails triggered by the offender when using the device

Research shows the interlock should not be removed unless certain conditions are met. If an interlock program requires an offender to have the device installed for one year, it does not seem logical to remove the device if it has recorded violations while installed. Program compliance is improved with efficient monitoring.

Programs should be designed to allow the state to act swiftly after the person becomes eligible. Policies must allow the state to quickly respond to violations that are triggered in the interlock device after it is installed. Program compliance is improved with efficient monitoring.

Electronic data collection and reporting is essential to maintain efficient interlock programs. Electronic data management improves the ability to monitor offenders with interlock devices. Vendors should be able to provide cellular data links to the DOT so that swift action can be taken.

To read the report in its entirety please visit: www. iowadot To read the report in its entirety please visit: www.iowadot.gov/research/reports.