A Framework for Validation of Cooperative Intelligent Transport Systems

This paper aims to present a methodology and a set of tools that could be used in order to check the validity of an Intelligent Transport System. These tools will consider each ITS component, i.e. C-ITS- R (Road Side Units) RSU, C-ITS-V (On-Board Unit) OBUU, C-ITS-C (Central Server) with its specific fea- tures as location precision for an OBU and adequate forwarding of dangerous events for an RSU. The aim of this paper is to tackle first con- formance testing for each component (in fact the component have to respect all basic specifications) before check the interoperability of all components (in order to ensure a correct functioning of the when they work together). Basic specifications have been mainly described by standardization institutes as ETSI or IEEE. But some additional specifications could be considered for particular aims (for example, car manufacturers do all agree on the distance to inform drivers on next dangerous events). This framework has been experimented with var- ious RSUs and OBUs from different providers. We have experimented the framework with all of them and many troubles have been detected. Most of the bugs are due to a wrong interpretation of specifica- tions. Sometimes, troubles reveal that specifications have been proposed with incorrect behaviors. The main conclusion is that such frameworks have to be improved and deployed widely in order to allow the deployment of large scale Intelligent Transport Systems.