The CIRCUIT results presented

• Rahul Tomar from DigitalTwin Technology GmbH presented the latest updates on the CIRCUIT web platform (WP2). A significant software update was delivered over the past few months. The platform—a digital tool designed to support infrastructure management in the construction sector—will be a browser-based application, with no installation required. In the coming months, CIRCUIT will work on the integration of relevant tools such as the Digital Product Passport (DPP), Circularity Analytics Tools (CAT), and carbon footprint tracking with an extended EPDs library. More details on the CIRCUIT digital platform can be found in the video below from the CIRCUIT Youtube channel:

• Luca Lottero from ERF presented the progress made on Task 4.4 (“Novel governance models and Innovation and GPP Guidelines”). ERF, with strong support from other partners involved in the task—such as RightClick and Infraplan—developed a survey on the main barriers, enablers, and indicators for Innovative and Green Procurement practices, addressed to both Public Authorities and Private Companies from all over Europe. The answers provided in the survey allowed the team to draft conclusions and recommendations for report D4.2, which has been submitted to the EU Commission and will soon be published on the CIRCUIT website. The report will also include the main results from Task 4.3 (“Data utilization models”), presented by Irina Stipanovic and the Infraplan team. The task aims to study solutions to implement various data models in quantification methods that are preconditions for GPP, and to develop a systematic framework for transforming raw environmental and operational data into actionable procurement intelligence. Esti Sanvicente from RightClick also presented the strategies developed by CIRCUIT for stakeholder involvement, such as the realization of a prototype board game and comics presented during local open days that, in the past months, involved local communities in Slovenia and the Netherlands.
• Esti Sanvicente from Right Click and Adewole Adesyiun from FEHRL also provided an update on the communication and scientific dissemination activities. The communication channels are updated regularly, but the importance of an active communication on social media to make the project more visible was emphasized.

CIRCUIT practical deployment in Pilots

The coordinators from the five CIRCUIT pilots updated on the most recent developments:

• Croatia (Pilot 1): the digitalization of the Sveti Rok tunnel is well on track, with the field work for the application of digital scanning tools completed. In the following months, the possibility of developing vectorization tools to convert images and point clouds into BIM, as well as the identification of existing stabilization measures, will be further analyzed. Furthermore, work will advance toward validating the defect detection model using the collected dataset from the Sveti Rok tunnel, followed by its integration with the BIM model. For the Krpani bridge, the indicators for the calculation of reusability and recyclability have been added to the BIM. On that infrastructure, the integration of data into the digital platform, the application of CAT, EPD, Digital Product Passport, and supply matchmaking tools, and the development of a protocol for UAV usage in inspection and digitalization are underway.
• Spain (Pilot 2): in the Lantueno tunnels, the upgrading works for the full adaptive lighting system are complete, while the validation of a more efficient tunnel ventilation system is still ongoing. For the Hoz tunnel, where CIRCUIT is working toward an innovative validation of a wrong-way driver detection and warning system, the technologies are ready to be deployed**,** and deployment is expected in Q3 2026. In the same pilot, CIRCUIT partner Uberbinder is supporting the development of innovative asphalt solutions in cooperation with the University of Cantabria.
• The Netherlands (Pilot 3): after conducting tests on a number of soil and binder samples, the past six months of the project focused on finding the optimized soil and binder mixture for Pilot 3 (the Dutch case study). The tests are expected to be finalized two months after the GA, which will be followed by final data processing and interpretation. The resulting dataset will enable the ranking of binders according to soil type and substitution level, followed by the selection of the most suitable mixture for implementation in the case study.
• Slovenia (Pilot 4): the contribution to D3.1 is finalized. The data have been collated into two datasets that will be published as independent items on the Zenodo repository. The formulation for the 3D-printed wall is complete, and specimens for mechanical and durability tests are undergoing evaluation. A new design for the safety wall was developed, one segment has been printed, and the BIM model has been developed. The following months will be dedicated to performing mechanical and durability tests on the concrete for the 3D-printed wall, finalizing the design, and initiating the STA activities for the concrete slabs.

• Italy (Pilot 5): the CIRCUIT Italian pilot aims to maximize energy efficiency by developing adaptive lighting systems, lighting poles equipped with photovoltaic generators and mini wind turbines, and adaptive ventilation control systems across four different sites: the Selva Candida tunnel in Rome, the Rome-Fiumicino motorway, the Casaleo and Nualetto tunnels, and the “La Rustica” interchange. While progress on this pilot is ongoing, during the remainder of the project, CIRCUIT will work toward completing procurement procedures and contract awarding, producing and installing the hybrid lighting poles, and kicking off the experimental and monitoring phase.

CIRCUIT participation at the Liaison final event

• Irune Indacoechea (UNICAN-GITECO) – Bio-binders & reclaimed asphalt solutions
• Laura Piarulli (ACCIONA) – Smart precast geopolymer pavements
• Sandra Skaric (Infraplan Consulting) – Modular low-carbon bridge slabs
• Rahul Tomar (DTT) – The CIRCUIT platform: a decision-support tool for sustainable road & bridge design
• Carlos Montoliu (ACCIONA – in substitution of Patrizia Bellucci from ANAS) – Energy hybrid-generators for lighting poles.

Furthermore, Bojan Vivoda from Croatian Motorways participated in the panel “Road & Railway authorities: How GPP and IPP will boost innovation and sustainability across the transport sector,” while CIRCUIT project coordinator Thierry Goger from FEHRL moderated part of the discussion.