On February 13, 2020, the municipal executive decided to launch a participatory process for the implementation of the Good Move regional mobility plan in the City of Brussels. The official kickoff of this process was given with a press conference on February 21, 2020. Concretely, the different stakeholders are involved in different ways during the main phases of the project. There are 3: the diagnosis of the current situation, the design and implementation of measures, and the evaluation of the effects on the ground. During the diagnosis phase, we valued the knowledge of the different stakeholders and mapped local needs and wishes (where are the problems, what are the limits...). This allowed the technical working group of mobility experts to get to work with the most comprehensive picture possible of the challenges ahead.