Analysis of SafeCOP Features in V2I and V2V Communication

Wireless communication in the traffic with Intelligent Transportation Systems (ITS) is growing into elemental part of the traffic entity. Entirely new types of safety and convenience services can be offered directly to the vehicular environment, enhancing considerably the traffic safety. Vehicles can also make their own observations, further developing the accuracy of these services. It is obvious that the safety and security of ITS communication needs to be ensured. The ITS communication environment (of vehicles, roadside units and core systems) is one entity of Co-operative Cyber-Physical Systems (CO-CPS). SafeCOP (Safe Co-operating Cyber-Physical Systems using Wireless Communication) project targets to a safety assurance approach, ensuring the safety within single Cyber-Physical element, as well as Co-CPS. Finnish Meteorological Institute (FMI) has created one SafeCOP use case for vehicular CO-CPS entity, for the road weather station and vehicle interaction. In this paper we present the vehicles and roadside unit interaction general structure and the motivation behind it. To ensure the safety and security of our communication environment, we have built CO-CPS functionalities to both vehicle and road weather station units. SafeCOP CO-CPS defines a runtime manager continuously detecting the behavior of CPS and in case of any abnormality performing runtime triggering. Furthermore, specific SafeCOP safety layer functionalities are introduced to ensure safety in entire Co-CPS. The proposed solution is analysed by comparing the vehicles and roadside unit communication procedure with and without SafeCOP functionalities, in terms of throughput latency and number of lost packets.