Younger people are often excluded from actively shaping the development of their cities. To this end, the 4I4U project is engaging younger citizens to design public spaces and urban mobility solutions, specifically targeting students aged 15-23. Events in Toulouse, France, and Barcelona, Spain, will be hosted with teachers, trainers, city leaders, and industry actors to develop the students’ skills, guide them to identify levers of change, and provide an opportunity for students to network with their peers. Based on the ideas generated during these events, a series of workshops and a hackathon will be held to bring the proposed solutions to fruition. The methodology developed may also become a model for the inclusion of younger people so they can feel able to influence urban mobility planning.