Urban growth places mobility as a multifactor problem and complex to solve. Among its less weighted aspects is the subjectivity of the phenomenon, specifically how people perceive their mobility and how participatory they can affect the definition of the city and transport planning. In this problematizing context emerges the study "Formulation of a Sustainable Mobility Plan for the Metropolitan Area of Concepcion", applied in the Biobio Region, Chile, and based on a citizen participation approach. Among its most outstanding findings is the role of the emotions of individuals, specifically what refers to the fear and insecurity that condition their movement through the city, beyond the situation of transport and infrastructure that it has. The foregoing would invite to rethink the meaning of the current plans and policies of urban planning, in order to specify a sustainable model of mobility.