The Traffic Injury Research Foundation USA, Inc. (TIRF USA) conducts an annual, national survey of the number of total installed and active installed ignition interlocks in the United States. This project is undertaken in partnership with the Association of Ignition Interlock Program Administrators (AIIPA) and TIRF in Canada. These data provide a comprehensive picture of interlock installations across the United States and are a useful benchmark for state ignition interlock program administrators and the impaired driving community to measure interlock program participation.
In the 2014-2015 survey, fifteen states reported arrest data with ten of these states providing a breakdown of arrest data by offense category. In addition, sixteen states reported conviction data with eleven of these states providing a breakdown of conviction data by offense category. Data for the total installed number (TIN) and the active installed number (AIN) and offense categories of each was collected and reported. Data collected also identified the percentage of those offenders who were eligible or required to install and then who actually installed a device. The results of this survey are critical to evaluate state interlock programs. Better understanding of the annual total number of installed interlocks can help interlock program managers gauge program effectiveness and opportunities for improvement and growth. These data can also be used in conjunction with arrest and conviction data to identify the potential eligible offender population within the state.
Project Status: Published
If you would like more information about this or any other project, contact:
Tara Casanova Powell
Director of Research
Traffic Injury Research Foundation USA, Inc.
Connecticut Office | T: 203-809-8709 |
Corporate Office | T: 202-507-6334 |