The Athens’ pilot comprises the testing of two distinct modules that support the future of ODDs and their efficient operation in complex environments such as the city of Athens. The first one refers to the developed localization methods testing through an excessive series of experiments. These experiments consist of two phases, lab-testing and real-world testing. The lab-testing phase aims to validate the localization models, using simulated data (GNSS, 5G) where a comprehensive view of algorithm’s behaviour in a fully controlled environment will be tested, by taking advantage of the integrity and repeatability properties of simulated data. The real-world testing phase consists of field testing experiments, in which, data from various sensors will be collected in critical points of the network (urban canyons, tunnels, etc), coupled with simulated 5G data, in order to assess models reliability and robustness in real-life applications. The second one refers to the testing of an AI-assisted traffic management strategy developed to optimize autonomous and mixed traffic near critical areas with complex interactions especially during the occurrence of a special event. Large scale impacts of the implementation of the strategy will be assessed through simulation using the complex and very detailed Athens Road Network.