Saturated enforcement: The efficacy of deterrence and drunk driving

Deterrence theory generally finds support among studies focusing on changes in apprehension certainty, in punishment celerity, or in punishment severity. However, scientific evidence establishing a clear deterrent effect of criminal justice institutions on criminal behavior remains problematic partly because of measurement, design and/or experimental control difficulties. This study attempts to overcome some of these methodological difficulties by measuring deterrence in a drunk driving enforcement program in a small Wisconsin city. It demonstrates a statistically significant relationship between a carefully designed enforcement program and driver response measured by accident rates. This finding is contrary to some recent studies challenging the efficacy of enforcement efforts aimed at traffic accident reductions. A general discussion of deterrence and enforcement amplifies the findings and conclusions. A word of caution is added regarding the findings.