Transport policy is shaped not only by public institutions but also by grassroots initiatives, activists, and citizen-led groups. The “Wir machen Wien” project explores this dynamic by bringing researchers and local initiatives together to co-create a map and database of such actors, informed and supported through scientific collaboration. This presentation provides insights into the opportunities and challenges of this approach and reflects on the role of applied research in engaging with civil society. It raises critical questions about how — and to what extent — researchers and activists can and should collaborate in shaping more sustainable public spaces.