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Effectiveness of ignition interlock devices in reducing drunk driving recidivism
1Department of Emergency Medicine, Allegheny University of the Health Sciences, Pittsburgh, Pennsylvania 15212, USA.
American Journal of Preventive Medicine
|January 28, 1999
Summary
Ignition interlock devices significantly reduce driving while intoxicated (DWI) re-arrests by 15-69% while installed. These devices appear effective in preventing repeat offenses during their use.
Area of Science:
- Public Health
- Forensic Science
- Traffic Safety
Background:
- Driving while intoxicated (DWI) remains a significant public safety concern.
- Recidivism rates for DWI offenses highlight the need for effective intervention strategies.
Purpose of the Study:
- To evaluate the effectiveness of alcohol ignition interlock devices in reducing DWI recidivism.
Main Methods:
- A systematic literature search using Cochrane Collaboration strategies identified relevant studies.
- Six studies met rigorous selection criteria, including program description, outcome evaluation, and comparison groups.
- Methodological quality was assessed, with weaker studies excluded from final analysis.
Main Results:
- Five of six reviewed studies indicated that ignition interlocks effectively reduce DWI recidivism during device installation.
- Participants using interlocks showed a 15%-69% lower likelihood of DWI re-arrest compared to control groups.
- A randomized controlled trial reported a 65% reduction in DWI re-arrests for the interlock group.
Conclusions:
- Alcohol ignition interlock programs demonstrate efficacy in decreasing DWI recidivism while the device is actively used.
- Further research should address exposure control (e.g., mileage) and identify specific subgroups benefiting most from interlocks.