Defining the C-ITS reference architecture

Cooperative-Intelligent Transport Systems (CITS) aims to facilitate cooperative, connected and automated mobility. The C-ITS domain comprises widely spread systems like traffic management systems, traffic light controllers, and vehicle on-board units. Such complex and heterogeneous systems have independent uses but demand a strategy to facilitate their convergence. C-ITS is currently demonstrated by projects such as C-MobILE, which is a large scale demonstration project spanning from 2017-2020. One of the main objectives of C-MobILE is to define a reference architecture for large scale C-ITS deployment and demonstration at the partner deployment sites across Europe. The C-MobILE C-ITS reference architecture is defined using the C-ITS architecture framework that is compatible with the ISO/IEC/IEEE 42010 international standard for architecture descriptions of systems. C-MobILE C-ITS reference architecture captures the needs of deployment sites and provides a guidance for future projects. In this paper, we present the context and the functional view of the C-MobILE C-ITS reference architecture and share the lessons learned.