Behavioral patterns of interlocked offenders

In jurisdictions around the world there is an increasing demand for the use of alcohol interlocks to reduce impaired driving. Hence, it is crucial that program administrators and practitioners understand behavioral patterns of offenders on an interlock to inform decision-making regarding the use of interlocks in programs. The purpose of the current study is to extend the work and findings from the previous study by Vanlaar et al. (2010), which reviewed data which was not specific to jurisdiction or sex of the offender. Instead, the data used were from the United States (U.S.) as a whole, without any breakdown by offender demographics. However, in the current study, new data are used to further investigate behavioral patterns of offenders in a more exhaustive manner.