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Nova Scotia Alcohol Ignition Interlock Program: Outcome Evaluation – Technical Report

In September 2008, Nova Scotia implemented an alcohol interlock program designed to improve road safety and reduce the number of road traffic crashes and fatalities due to impaired driving. This report describes the outcome evaluation of Nova Scotia's interlock program, which was part of a large-scale evaluation of this safety measure. The main objective was to examine the impact of Nova Scotia's interlock program on participants and to help identify areas for improvement.

The study included experimental and control groups of offenders who had either voluntarily installed the interlock or who had been mandated to do so. Several different data sources were analyzed including conviction and crash records of participants, self-administered questionnaires to measure specific attitudes and behaviours, monthly counts of charges, convictions and crashes, and interlock logged events. Evaluation results revealed positive specific and general deterrent effects. Collectively, the evidence suggests that the implementation of the interlock program had a positive impact on road safety in Nova Scotia and that it reduced the level of drink driving recidivism in the province.

Funding for this project was provided by Nova Scotia Department of Transportation and Infrastructure Renewal

Nova Scotia Alcohol Ignition Interlock Program: Outcome Evaluation - Technical Report

For more information, please contact:

Jennifer Hall


613-238-5235 (office)
1-877-238-5235 (toll-free)
613-238-5292 (fax)
jenniferh@tirf.ca
http://www.tirf.ca/


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