Key Features for Ignition Interlock Programs

This report describes an effort to document alcohol ignition interlock programs in the United States in order to highlight those programs or program features that are believed to be best able to serve traffic safety interests. Information has been gathered on important interlock program features together with some recommendations for States to consider as programs are developed. This publication reflects information of the time it was written. Therefore, some statements may be outdated. In addition to the literature search and telephone conversations with State experts identified by Governors Highway Safety Representatives, wide ranging commentary was provided by key informants during a parallel effort to document interlock program features undertaken by the Interlock Working Group (IWG) of the International Council of Alcohol Drugs and Traffic Safety (ICADTS). All the above sources of information were compiled into a preliminary report in order to frame the discussion for an expert panel meeting. This final report represents the views of the authors, but also reflects input from panelists, written commentary to the IWG, and documented, published sources. The general topics of this report include the following: program enrollment issues; interlock program ramp-up and expansion; standardization of reporting and information flow; program compliance, noncompliance and interlock removal; linkages to treatment; differences in court-based judicial programs and motor vehicle administered interlock programs; and suggested core elements of interlock programs. The authors believe that the single major difference among panelists centered on whether interlocks should play a role in the monitoring of court-ordered alcohol abstinence. This final report will be useful to anyone concerned about interlock implementation and traffic safety.