Underground hubs. Interiors: Design quality effect on user experience.

In a Design Driven Research approach, the primary importance of analyzing an object from multiple points of view emerges, keeping the choices made in the field of design as a common thread. This research investigating the world of underground hubs follows an inductive methodological approach, within the field of action and related sub-themes, followed by a careful and targeted study of the bibliography and case studies. From the analysis of the case studies (selected by specific geographical, functional and design criteria) and their taxonomic comparison, it is possible to extrapolate data that can be evaluated as design components that are effective or not in guaranteeing a satisfactory user experience. The data will be discussed and related to reflections on the quality of the interior space and the ability of the hub to manage intransit flows between surface and underground. The data observation will be supported by a careful overview and redesign of the project sections of the case studies, from which important information about the spatial relationships between the different areas of the hub can be extrapolated. This will be combined with the consultation and contribution of experts in the field, who will be able to provide key information regarding some of the choices applied. The conclusion of the research sees the elaboration of project guidelines that will allow, at an international level, to approach the hub system by fully exploiting the potential of transport infrastructures, taking the user experience into account from the design phase onwards.