Practical experiences on a road guidance protocol for intersection collision warning application

In this paper, we provide an overview on a standardization activity in ISO TC204 WG17 for ISO 13184 series and discuss how to develop the Road Guidance Protocol (ISO 13184-2) and deploy it for the road safety use cases implementation based on V2X using the Personal ITS-Station. We have a standardization activity to specify the protocol which is designed to be flexible and extendable, which enables to add or delete Cooperative ITS use cases conveniently. Also we had a field trial of the RGP applied CAVG (Cooperative Autonomous Vehicle Guidance) system at a three-legged intersection as a test site and verified the RGP between the VGSS (Vehicle Guidance Server Subsystem) and the VGTS (Vehicle Guidance Terminal Subsystem) to periodically exchanges information (e.g., position, moving speed, direction, collision-possible and so on) using WAVE/DSRC technology.