Snap4City SUMI Manager: A Digital Twin-Integrated Framework for Sustainable Urban Mobility Indicator Processing and Visualization

Urban mobility is one of the greatest challenges modern cities face today. Traffic congestion, inefficient public transportation, high cost, insufficient road safety, and air pollution are some of the problems related to urban mobility. To evaluate current implementations and promote more sustainable solutions for reducing en-vironmental, social, and economic impacts, and promoting efficient and fast trav-els, the European Commission developed the Sustainable Urban Mobility Indica-tors (SUMI) to provide standardized and comparable indexes to assess the actual sustainability of urban mobility in European cities, fostering a continuous im-provement of mobility policies. Despite SUMI relevance, currently there is no application that allows public administrations computing SUMI in a simple and automatic way. In this paper, the SUMI Manager is proposed as a tool built on top of the Snap4City Digital Twin platform to manage required data, compute the indicators, compare them among cities and over time, and visualize their temporal evolution in interactive dashboards. The SUMI Manager can be deployed in mul-tiple cities to support municipalities in assessing and improving their mobility policies.