The paper outlines the methodology proposed in the European project ELABORATOR, aiming to support European cities in their efforts on person-centered mobility towards climate neutrality. At the centre is the UN SDG 11, which will be addressed via following a co-creation approach, adhering to the quadruple helix model and around articulating and designing urban interventions for all citizens. The employed methodologies facilitate a genuine relationship between citizens and other urban stakeholders via a meet-in-the-middle approach, seeing the city as a meeting place where all involved actors of the helix can co-create to generate new value. This is vital for ensuring societal relevance, unlocking innovative pathways, to support solutions’ adoption and longevity [1]. It is a multi-stage co-creation process encompassing co-designing, co-production, and co-evaluation, spanning in four phases: 1) The Set-up phase establishes a toolkit for evaluating urban mobility indicators, setting baselines while ensuring broad citizen participation. 2) Within the Discovery and Definition phase, actors collaboratively identify local mobility gaps and prioritize interventions, introducing a twinning methodology for knowledge transfer across cities. 3) In the Implementation phase, stakeholders engage in knowledge co-production, assessing each intervention using participatory tools. ICT tools are developed for structured information collection and organization, accessed via a data marketplace, and enabling cross-evaluation. 4) The Evaluation phase follows the steps of before and after studies, where pre-intervention is compared with post-intervention.