This thesis addresses the problem of information systems (IS) adoption, starting from the problem posed by the deficit in use of traveler information mobile applications, yet applications designed to help solve problems related to transport in modern societies. It attempts to answer the question of which factors may improve IS use in their potential audience. Given the supremacy of the system-centered approach giving priority to technological factor in identifying the determinants of IS use, this work defends the view that a psychosocial approach is better able to elicit the processes by which individuals come to use these systems. In this context, the first axis of this research examines the role of beliefs in adoption. The results obtaine...