What is the challenge SUSTANCE project is tackling? Citizens living in rural or peripheral areas of Central Europe are facing inadequate connectivity. They face fragmented transportation networks and lack of sustainable public transport solutions, particularly at the cross-border level. In the same time European policies look toward a greener and smarter future, by supporting, among others, actions aimed at promoting the development of sustainable public transport solutions. It is to provide all citizens with equal public transportation services and access opportunities. What will SUSTANCE project do about it? In close cooperation with relevant stakeholders, test innovative pilot actions in cross-border regions of Croatia, Hungary, Italy and Slovenia. (1) We will set basis for introducing a new cross-border train service between Croatia (Pula-Buzet) and Slovenia (Divača). (2) We will introduce a new cross-border train service connecting Italy (Trieste, Villa Opicina), via Slovenia (Divača, Pivka), with Croatia (Rijeka). (3) We will extend until Sopron the cross-border train service linking Austria (Neusiedl am See) with Hungary (Fertőszentmiklós). (4) We will develop demand responsive transport application in Italy (Romagna Region), including ICT application for planning, booking and e-ticketing. (5) We will develop interactive ICT app for Istria Region (Croatia), that will display all private and public transport services in one place. (6) We will invest in a web portal and mobile app to promote and increase the use of railway services and bicycles in Croatia, Italy and Slovenia. (7) We will invest in shared mobility solutions by installing bike/scooter sharing points in Istria region (Croatia). All of these actions will pave the way to the adoption of long-term action plans and solutions.