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 the Conference website : The 15th bi­an­nual NEC­TAR conference15th International NECTAR Conference  Helsinki, Finland, 5 - 7 June 2019Abstract:  With the constant growth of urban population worldwide, there is an  increasing need to develop cities that are environmentally and socially  sustainable, functional and supporting well-being of their inhabitants.  When striving towards these goals, transportation and mobility play a  crucial role.   The conference calls for presentations on advancements in the field of  transport, communication and mobility. The focus of the conference will  be on urban transportation and the new possibilities that open data and  digital technologies provide for mobility solutions. For example,  presentations may discuss how transport policies are and should be  changing, present emerging ways of organizing the daily mobility to make  cities more sustainable and more pleasant or present novel ways of  analyzing transportation and mobility from the perspective of people.          