This study defines a design proposal useful to face organizational problems in the space of contemporary metropolitan cities. More specifically, public transportation systems are analyzed in their relationship with the in-between spaces of the urban sprawl. 'Sustainable Service Stations for Cyclists' (sssc®) is the outcome of this research-by-design survey. sssc is a design solution and model that is tested here on the urban voids of Milan and above all on the subway stations. It aims at assisting the use of bicycle and encouraging bike-sharing in the mobility behaviours of people. In this design model of intervention three archetypes - the tower, the kiva and the blade - are involved to create new interchange points between transit flows and new urban landmarks in an interconnected network.
