Nowadays, “smart city” has become a buzz word, bringing the idea of better life for citizens with the help of technology. Data plays a big role in smart city development. Collected and analysed data sets are the starting point for planning and development of new services and innovation of the old ones. Data sets are also input in the decision-making process. In order to help advancement of the public transport, reduce traffic jam, or tackle any kind of infrastructure problem, we must look at the data we have and analyse it in search for answers to our problem.