01698283

Component

Minnesota sponsored a review of the effectiveness of the State’s ignition interlock device program in reducing recidivism among drivers convicted of driving while impaired (DWI) by alcohol. This study examined driver records and demographics, interlock device events and program violations/completions, and participants’ self-completed surveys about their experiences and success factors while on the program. A group of propensity score matched non-participants served as the basis for comparison of recidivism rates, or subsequent DWI arrests, for participants versus non-participants. Factors predicting interlock program failure include high Breath Alcohol Concentration (BAC) upon arrest, test refusal, and number of prior violations. Older drivers, urban drivers, and (as expected) those with the fewest start-up or rolling retest violations during the program were the most likely to complete the program. Recidivism reaches a long-term (54 months post-program) rate of approximate 8% for program participants. Non-participants recidivate at roughly double that rate over the same period.

This paper was sponsored by TRB committee ANB50 Standing Committee on Alcohol, Other Drugs, and Transportation.

19-02894

English

6p

2019

Transportation Research Board 98th Annual Meeting

Digital/other

Figures; References (6)

Alcohol ignition interlock devices; Drunk driving; Highway safety; Recidivism; Traffic law enforcement

Minnesota

Highways; Law; Safety and Human Factors

Transportation Research Board Annual Meeting 2019 Paper #19-02894

TRIS, TRB, ATRI

Dec 7 2018 9:50AM