Studies have repeatedly shown that alcohol interlock programmes, combined with rehabilitation programmes, cut reoffending rates both during and after the driver has been required to install the device in their vehicle.
ETSC (European Transport Safety Council) has just published a study about alcolocks:
Across Europe there is still a group of hard core drink driving offenders that seem unwilling or unable to change their behaviour despite the use of traditional countermeasures such as awareness campaigns, fines and driving bans.
For this group, the introduction of an alcohol interlock programme seems to be an effective measure.
Repeat offenders have shown that they persist in drink driving, even when they have been caught and penalised. Drink driving recidivism correlates with more frequent crash involvement (Nochajski and Stasiewicz, 2006). Furthermore, recidivism rates are higher among drivers with high BAC’s than among drivers with low BAC’s (ADV, 2013; Deyle, 2010).