Rio de Janeiro, with approximately 12 million people in the metropolitan area, is working towards its goal to be a modern high-technology city with an efficient transport system. The City of Rio de Janeiro and the State of Rio de Janeiro hence invest a lot in the expansion of the physical infrastructure such as the metro system, development of bus rapid transit, city trams, etc. Moreover, the Strategic Plan 2013-2016 of Rio de Janeiro’s City Council emphasized better integration between all modes of public transportation, as well as the implementation of traffic management technology such as intelligent control of traffic lights, real-time information to users, and monitoring of routes. In addition, there was also a need to invest in corresponding digital infrastructure to enable more useful information services for everyday travel. With more accurate traffic information available and provided to travelers, it will help to align expectations with the overall performance of e.g. the public transport system. In other words, the frustration that typically follows from traffic disturbances can be mitigated if travelers are well-informed and promptly notified about delays. However, as users acquire more devices and utilize ICT in personalized and less predictable contexts this development also faces organizations with a dilemma: how can information and services be supplied pervasively given the user diversity and the limited amount of resources available for service development? To this end, many cities open up their traffic data to enable outsiders to cater for end-user services. By cooperating with external third-parties who find financial or other incentives to pursue development, public authorities can then achieve a more pervasive distribution of traffic information, helping the citizens in their everyday travel as well as nurture new firms and other actors developing end-user applications.