“…Our results show that organizational models, in particular the type of management, seem to play a role in determining the level of efficiency of urban rail companies, as discussed by [13,14,17]. As shown, most of the indicators support the conclusion of a higher level of efficiency in privately managed firms, confirming the previous findings of [5,13,14]. In fact, as discussed in the literature, most studies (e.g., [25,27]) claim that the private sector is typically able to bring higher levels of productivity and social welfare.…”