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Ina Heise

• Road infrastructure represents a complex system encompassing various interdependent subsystems. Its management and maintenance require an excellent condition assessment of any asset involved. The concept of a Digital Twin has become established for capturing complex systems with their condition changes over time. A digital road infrastructure twin for management and maintenance requires a concept that considers the integration of all relevant subsystems, including their interdependencies. Existing software systems that are nowadays used to maintain road infrastructure in the state of Bavaria, Germany, consider specific aspects of one system. This article discusses the challenges of defining and using a digital twin based on existing road infrastructure management data. Furthermore, a structured requirements analysis is performed. For this purpose, use cases of a digital road infrastructure twin will be identified and described. These examples are taken as a starting point to determine how and which information sources must be incorporated to solve the use case requirements. Their implementation requires a linked evaluation of different distributed data. For this purpose, the proposed system links the required information available in the respective subsystem and evaluates them depending on the use case.