A questionnaire survey has been conducted as part of the evaluation of the Joint National Action against Drunk and Drugged Drivers according to the Skellefte Model which the Swedish National Road and Transport Research Institute (VTI) has carried out at the request of the Swedish Road Administration. The questionnaire was aimed at individuals who deal with drunk drivers within the police or social services/addiction treatment systems. The objective was to describe how this work is organised within the respective organisations, how contacts with drunk drivers and the administrative process surrounding the forms have worked, and whether the model has required more resources in terms of person-hours than had been the case prior to the implementation of the model. Depending on the circumstances of the particular target group, the questionnaire was distributed either online or by mail. 452 of the 589 individuals within the police or social services/addiction treatment systems who were chosen to receive the questionnaire responded, giving a response frequency of 77%. Two versions of the questionnaire were prepared, although the bulk of it was the same for both target groups. Both police officers and individuals involved in social services/addiction treatment systems were asked to recall the most recent case they had handled in accordance with the Skellefte Model. Bearing that case in mind, the respondents were then asked to describe how the routines had worked.