A paper titled “Impacts of autonomous on-demand mobility service: A simulation experiment in the City of Athens” authored by Vasileios Mourtakos, Maria Oikonomou, Pantelis Kopelias, Eleni Vlahogianni and George Yannis has been published in Transportation Letters.  To that end, an urban on-demand shuttle service was designed, optimized, based on a variation of the Dial-a-Ride optimization problem (DARP), and implemented in the road network of the city of Athens to serve different portions of demand with various capacity specifications. Findings show that it led to improved network level traffic conditions, as delays decreased, and that traffic impacts evolve with fleet capacity and served demand. Furthermore, the number of conflicts decreased and the environmental conditions significantly improved, with CAVs in the network, while the traveled distance increased.