Abstract
As demands for more effective legal remedies for drunk driving escalate, a number of states have authorized judges to use breath analyzer ignition interlock devices as an optional sanction in drunk driving cases. This research presents initial findings from a quasi-experimental study designed to evaluate the effectiveness of interlock devices as a deterrent to a repeated drunk driving arrest in a sample of persons convicted of DUI. Survival rates across a 30-month risk period, during which interlock installation, license suspension, and probation sanctions were in effect, indicate that interlock devices significantly reduced the likelihood of a repeated DUI arrest as compared to license suspension.
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