SUMO project aims to improve sustainability and mobility in some of the main port cities of the programme area, through developing a cross-border Adriatic system to encourage the use of means of transport alternative to cars (hybrid/electric motorboats and buses, bicycles). Four pilot actions will be implemented in Termoli, Brindisi, Bar, Valona, in order to improve the travel experience of tourists and citizens while reducing the carbon footprint in the involved territories. Expected results are: widening of the smart and sustainable mobility network; citizens’ awareness raising on smart and green mobility; improvement of transnational coordination in the development of integrated traveller transport systems.