This is to summarise current new developments in public transport and, with the concept of public mobility, to outline the concrete idea of a sustainable public transport system. In addition to the new mobility services and the political and legal framework conditions, new instruments are presented with which public mobility can be actively shaped in the future. The concept of public mobility ties in with the claim of public transport and shows how mobility can be offered to all citizens in an economically efficient, ecologically compatible and socially just manner under the changed social framework conditions.