One of the most important causes of traffic danger is speeding. However, it  appears that driving too fast in the traffic is a phenomenon, which is very  difficult to influence. The author states that there is a need for a  preventive approach and that this is why the concept of sustainable safety  was introduced in The Netherlands. A concept, which is comparable with the  Swedish "Vision Zero" approach. The concept is briefly presented. A part  consists of government subsidies to local authorities if they can present  overall accident countermeasure programs. The process of making submissions  by the local municipalities could be stimulated by allowing residents to  actively participate by applying at their local councils for more 30-km zones  in their neighbourhood. An important part of this is that councils develop  the plans in dialogue with residents. This also helps raise the public's  acceptance of speed controlling measures. It is precisely these two aspects  of public participation (mobilisation and activation, as well as the creation  of a basis of support and acceptance) which have enabled The Dutch Traffic  Safety Association - 3VO to develop concrete plans. These plans are twofold.  On the one hand the public campaign "30 maakt je buurt weer prettig" ("30 km  zones in front of your own home") and on the other hand, a methodology for  interactive policy forming. The presentation in this paper details features  of the campaign.