Evaluation of a Swedish alcohol interlock program for drink driving offenders
Overview
Background & policy context:
A permanent alcohol interlock program for drinking drivers came into force on 1 January 2012. The Swedish Transport Agency is responsible for the program that applies to all types of driver's licenses.
Objectives:
The program includes both a one-year and a two-year alternative. The two-year program applies to offenders that have committed a severe drink driving offence (BAC > 1 g/L, the legal limit in Sweden is 0.2 g/L), have an earlier offence within the previous five years, or have the diagnosis alcohol use disorder or alcohol dependence. All others are assigned to the one-year program.
Methodology:
Several aspects of the alcohol interlock program are evaluated at VTI. This report presents the results of a survey in which 1,100 questionnaires were answered by both participants and non-participants. The response rate was 45 percent of the participants in the interlock program and 28 percent of the non-participants. The average age of the respondents was just over 50 years, with marginal differences between participants and non-participants. The proportion of women among the respondents in the program was 13 percent, compared to 20 percent of the respondents without alcolock.
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