In recent decades, countries have adopted and tried a number of measures aimed at reducing car use and increasing the use of public transport (PT). Mobility-as-a-Service (MaaS) systems could open up new opportunities to meet both sustainability goals and traveler needs. The fusion of digital climate and environmentally friendly capacity and traffic management, complemented by the associated digital information infrastructure, represents a great opportunity here for the promotion of sustainable mobility. This integration leverages extensive expertise from operators of traffic routes and means of transport, augmented by real-time situational awareness within their respective networks. The MUST (multimodal traffic control through a combination of innovative communication channels) project encompasses a consortium composed of transport operators, the largest Austrian automobile association, industry leaders, research institutions, and the Austrian national public broadcaster. The primary objective of the MUST project encompasses an assessment of the current information and communication channels within the consortium, while simultaneously conducting a prospective evaluation for both enhancing existing channels and introducing entirely new ones.