Process evaluation of the NSW mandatory alcohol interlock program

A process evaluation of the NSW Mandatory Alcohol Interlock Program aimed to assess program implementation, improve program delivery and refine policy settings. The evaluation found the roll-out was an overall success and sentencing patterns reflected the intent of the legislation. Non-compliance offences were very low (<1%). The participant survey showed 82% of respondents approved of the program, though the take-up rate for the Interlock licence (54%) could be improved. Participants said that the Interlock licence helped them separate drinking from driving and maintain work and family commitments. However, the cost of the device was a common concern.