Impact of Compliance-Based Removal Laws on Alcohol-Impaired Driving Recidivism

These results demonstrated the lack of quality IID installation and removal data, the infrequency of IID installations, and the large variance in data quality and formatting across states. [...] 8 Given the variability and nuances within each of the state datasets, the following inclusion, exclusion, and classification criteria were applied to the data analyses: • Offenders who had only one arrest during the study period and never installed an IID were removed from the analysis. [...] Based upon the state data provided, it was impossible to differentiate if missing installation data were the result of the offender failing to install an IID or because these data were simply missing from the database. [...] Table 4 shows the breakdown of individuals with early, on-time and late removals given the mandated period of installation and a 15-day grace period before and after the mandated removal date. [...] If a first-time DUI offender was accompanied in the vehicle by a person younger than 18 years of age, the person shall have the ignition interlock device installed for 6 months for the first offense and for at least 2 years for a second offense.