Public passenger transport competences fall under the responsibility of the Transport Organising Authority, the Nouvelle Aquitaine Region. To fully respond to mobility challenges on its territory, the Region wishes to modernise the transmission network by making it interoperable accompanied by a multimodal information system for passengers and network operators. The proposed project consists of a modernisation of the TransGironde ticketing system compatible with these challenges as a management support tool to manage revenues, to know the attendance in order to optimise the offer, to facilitate the distribution and use of tickets, to adapt the tariff offer to the different specificities of the users.