The WGBU (2011) calls the sustainability transition towards a net-zero Europe the biggest challenge that mankind has ever faced. Naturally, all parts of society need to take their toll. In its statement paper ‘The Great Transformation’ (2011), the WGBU highlights the innovative and trans-formative potential of civic engagement within the sustainability trans-formation, a recurring claim made within the field of transformative re-search (WGBU 2011, 2020, Göpel 2016). Yet, there are not enough of- fers for citizens to acquire the necessary skills, Futures and Transforma-tive Literacy. While more and more research and political institutions are incorporating the theories of sustainability transformation as a frame-work, the question of who will take on the task of building transforma-tive competencies among citizens remains open (EEA, 2019).

Global, as well as local environmental problems, demand a transition of the current fossil-fuel dependent transport system. On the urban level, the bicycle as a sustainable transport mode is gaining importance, as in Berlin. To what extent Berlin is facing a transition of its transport system is discussed in this thesis. The multi-level perspective on societal transitions by Geels and Schot (2007) serves as the theoretical framework. A literature review made it possible to present factors stabilising as well as destabilising Berlin’s current transport regime. Even if it is considered to be robust against change, there are severe pressures from the macro-level, like environmental and health impacts and growing mobility demand. Berlin’s new Mobility Act is even one example of a successfully broken through innovation that has led to regime changes. Hence, niche-innovations, like the cycling project Radbahn are considered to be important for transitions. But there are aspects complicating a breaking through of such niche-innovations. Through semi-structured expert interviews with stakeholders, identified through a stakeholder analysis in advance, barriers to realising theRadbahnare identified. The results show realisation difficulties related to the legislative context and to the administrative system in Berlin. In addition, there are other aspects connected to the innovative nature of the project, its design and the routing that may cause difficulties.