By the end of the project, all planned deliverables and milestones were successfully completed. The experimental studies, participatory deployments, software demonstrators, and dissemination activities progressed according to the Description of Action, with each work package achieving its scheduled outputs.
To complement the experimental work, the team developed a custom air quality measurement device and carried out real-world deployments as part of a participatory research initiative. This included a series of co-creation workshops and data-sharing events designed to involve citizen scientists in the collection and interpretation of environmental data. The public-facing component was further highlighted through collaboration with Citizen Science Zurich at Scientifica 2023, Switzerland’s largest science festival. Held on September 2–3, 2023, the event drew more than 20,000 visitors and served as a platform to communicate the relevance and impact of citizen-involved research.
The team also hosted the Participatory Resilience Hackathon at ETH Zurich as an educational block course. This initiative brought together students and external participants in a highly interactive format to explore practical applications of participatory system design and computational social science.
In parallel, the CoCi project supported high-level reflection and interdisciplinary exchange through the organization of multiple thematic workshops. These included the Twin Workshop on ``Ethics of Smart Cities and Smart Societies" at ETH Zurich and the Co-Creating the Future: Participatory Cities and Digital Governance event in Vienna, co-organized with the Complexity Science Hub. Most recently, the project contributed to the Back to the Future workshop in February 2025, an international forum that examined the evolution of digital, data-driven, and AI-enhanced cities. The event emphasized critical themes such as complexity, collective intelligence, digital twins, agency, and co-evolution, and provided a space for integrative, future-oriented dialogue on urban governance.
To support experimentation and model validation, the team developed several open-source software tools and interactive applications.
These include a realistic and empirically validated digital twin of traffic in the urban area of Barcelona, as well as an immersive virtual-reality traffic scenario designed for behavioral studies in mixed environments. A separate demonstrator tool was built to evaluate and compare the performance of machine learning-based and self-organization-based traffic signal control strategies. This interactive tool provides both quantitative metrics and qualitative visualizations, enabling researchers, practitioners, and stakeholders to assess trade-offs under different conditions.
The CoCi team has also actively contributed to scientific dissemination through the publication of peer-reviewed journal articles and book chapters.
In parallel, members of the CoCi team have taken leadership roles in organizing special issues in international journals, furthering interdisciplinary dialogue on CoCi’s core themes.
A MOOCs-style course has also been prepared to support capacity building and broader engagement with the project’s research topics.
These outcomes reflect the project’s commitment to scientific excellence, open science, and societal impact.
