The study aimed to identify the level of data openness of the state traffic departments in Brazil (DETRANs). Two assessment instruments were used: Berners-Lee’s (2010) Five Star Scheme and the 15 Open Data Principles proposed by Opengovdata (2007). Based on them, a methodology for structured analysis was built, and used to analyze three sets of data: related to the National Driver's License (CNH), to vehicles, and to traffic violations. Results indicate a low level of openness, lack of standardization, and the absence of specific regulations to stimulate or oblige the publication of traffic data in open formats.

Open Government Data (OGD) is a stream in which raw data is published for manipulation by others. This chapter presents the State of Art of OGD in Brazilian National, State and Municipal governments, describing benefits that OGD have been promoted on governments and society such as transparency promotion, social control and citizen participation. In addition, strategies used by governments are outlined aimed at boosting usage and the creation of chain value of OGD usage. Exploratory research is conducted by investing websites in accordance with the eight principles of OGD and the five stars of open linked data. Brazilian initiatives adopt almost all the principles of OGD and are in the third stage of a completely open linked data (three stars). Further, the strategy used by governments is the usage of citizen’s participation on contests and hackathons improving usage of OGD available by governments and created several applications for social control, transparency and better provision of public policies (transport, health, education, etc.). This work also adds an element inexistent on the literature known: strategies of dissemination and incentive of open data usage. The results indicate the existence of virtuous cycle of information when using public policy of open data is aligned with the implementation of the collection, analysis and opening data for several branches of city hall, and even that little data, but organized, can offer the possibility of citizen conduct social control, suggest improvements of the public service through studies and applications connected to processes performed by the city and local economic development.

The use of Information and Communication Technologies (ICTs) for information transparency in Brazil is not recent. It is possible to highlight several strategies have emerged to promote transparency of these information. This article aims to fill a gap observed in the literature regarding the use of data and information provided by governments and used by citizens and companies from the comparison with the specialized bibliography. The methodology consists of a single case study, the city of Rio de Janeiro, with review of literature in the field of e-government and open data followed by an exploratory study of the portals open data and open data policy municipality of Rio de Janeiro. Furthermore creating a simple visit to portals based on the literature review of the eight principles of open data of the Open Government Data and five stars of Tim Berners-Lee. Finally, based on the work of Zuiderjwik & Janssen (2014) pointing virtuous elements of the use cycle of open data by civil society. This work also increase an element lacking in the literature: strategies of dissemination and encouraging governments to use open data. The results indicate the scarce, but organize data can improve the performance of service delivery of a city.