Message Based Terminal Manager for Public Transportation Systems

Message-Oriented Middleware (MOM) enables applications to communicate and share data by sending and receiving messages. It is often preferred to solve the communication problem in heterogeneous systems with the application of the loosely coupling principle and asynchronous communication features. Public transportation systems, considered as part of intelligent transportation systems today, create such a heterogeneous system by deploying software units provided by different manufacturers. To manage this complexity in an integrated manner, the international Information Technology for Public Transport (ITxPT) standards have recently been defined in order to ensure that companies, providing intelligent transportation technologies to the fleets, are able to properly manage the complex infrastructure in question and to eliminate the problems of compliance. However, ITxPT does not offer a solution for contextualizing and interpreting the data circulating within the vehicle network. Building upon the mentioned gap, this study extends the architecture and introduces a message-oriented terminal manager that is sensitive to events and state changes. The terminal manager is responsible for storing application data within the network, monitoring state changes, and generating new events based on the message topic/event relationship. The terminal manager enables centralized data filtering.