The PLATONIC project is to develop cooperative positioning and integrity concepts and algorithms for vehicle platooning.  The innovative positioning and integrity concept and algorithms for the vehicle platooning would be based on GNSS (e.g. PPP or moving based RTK), V2X communication, IMU/odometer and V2V relative ranges. In order to demonstrate the developed concepts and to gather relevant experience and measurements, the project will develop a demonstration platform based on the integration of the GMV NSL positioning and integrity solution with HORIBA MIRA autonomous vehicle control system. Data will be obtained through field trials, based on the MIRA proving ground as well as on public roads. The project will investigate the platooning size of 3 vehicles for the proof of concept demonstration and 6-8 vehicles for simulation purposes.