The overall goal of the project is to reduce climate impact by supporting the transition of the transport system in Skåne as a region. This will be done by investigating and analysing how best to design and use a climate change model as a policy instrument to reduce carbon dioxide emissions primarily in the public sector. The goal of the project is to analyse how a climate change model is best designed. There will also be a review of the possibility of streamlining and strengthening the benefits by coordinating the operation of such a system. At least four organisations must be ready to start climate change at the end of the project. Analysis of appropriate forms of collaboration should also have shown which level the coordination should be on.