Simulation-based distributed systems: Serving multiple purposes through composition of components

The paper presents a new information technology approach for simulation-based systems capable of serving multiple purposes through the composition of components. Based on the High Level Architecture for Modeling and Simulation (HLA) software architecture for distributed simulation systems, this approach takes into account the need for flexibility, re-usability and interoperability in order to be applicable in different operational modes such as system design and development, operation, training as well as risk and scenario management. A prototype dispatching system for public transportation demonstrates the concept.