Model-based design of coordinated traffic controllers
Sinha, R; Roop, P; Ranjitkar, P; Zeng, J; Zhu, X
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Modern transportation systems optimize traffic flows in road networks by allowing intersection-level traffic controllers to communicate and synchronize. Typically they are distributed systems, with multiple nodes (intersections) communicating with each other in real time. This paper proposes a design process for traffic coordination systems using model driven engineering (MDE), a paradigm used to design complex embedded systems in automotive and aerospace. The approach combines a conventional micro-simulator (AIMSUN) with a state of the art control modelling tool (Simulink) following a model-view-controller approach. The MDE approach allows for both micro-simulation (on a PC) and emulation (using embedded controllers). Once the model is validated, automatic code generation can be used to generate the implementation of the system on embedded devices. As a case study, the authors designed a SCATS-inspired coordinated intersection control system. To the authors' knowledge, the proposed approach is the first, fully automated approach for the design of complex intelligent transportation systems (ITS).