I. Introduction
PUBLIC transport plays an important role in sustainable development of cities as it copes with the rising demand for mobility and helps reduce carbon emissions [1]. However, from a passenger point of view, public transport systems such as buses can be complex and difficult to use, lacking in freedom and flexibility offered by privately owned vehicles [2]. Due to recent advances in information and communication technology, novel opportunities have emerged for improving public transport systems to be more user friendly and passenger centric [3]. In particular, the wide adoption of mobile devices has provided public transport providers new channels for information dissemination [4]. Being able to provide travelers instant access to public transport data, e.g., real-time information of arrival times, incidents, or delays [5], has shown to create a positive impact on experience and satisfaction with public transport services [6].