Aimed at increasing people’s mobility, the Cooperative Intelligent Transportation Systems (C-ITS) paradigm postulates that all modes of transport, and their means, are interconnected and their operations synchronized in time. This principle is also imposed on C-ITS infrastructures as well as services provided by C-ITS solutions. All of these inevitably require interconnectivity and interoperability among all C-ITS hard and soft components, products, and services. In return, such operational conditions make C-ITS components interdependable.