The Sustainable Urban Mobility Plan (PUMS) is the strategic document that aims to guide city mobility policies for the next 10 years. Regional rail transport is able to offer a strategic contribution to the efficiency of the public transport backbone network of the Metropolitan City. The PUMS's choice was to take the "Capillary" operating model as a reference since it has the greatest margins of integration at a territorial level in peripheral areas and the obligation to reserve adequate capacity also for crossing the Florence. The "capillary" scenario through an infrastructure project for accessibility to all stations/stops in the urban area of Florence, starting from those directly connected to the tramway network, is able to form a powerful capillary distribution system of demand directly through the load-bearing network, without necessarily burdening the urban automotive network. Regarding the completion of the high-speed railway system in the Florence junction, the PUMS, in confirming the forecast of the HS under-crossing, can only reiterate and strengthen the request for reorganization of the surface railway node, highlighting the need to guarantee all the measures that allow the surface track network to carry out a metropolitan and urban railway service such as to guarantee adequate accessibility to users of the Florentine metropolitan area. The PUMS drafting is based on a logic based on scenarios, aimed at verifying and comparing the effects of different possible strategies for managing mobility: the Reference Scenario (i.e. the interventions that can be implemented independently of the PUMS as they are already planned-programmed and already have financial backing), the Plan Scenario (i.e. the infrastructural and non-infrastructural interventions, additional to the reference Scenario that respond to the general and specific objectives set by the PUMS), the Evolutionary Scenario. The PUMS geographical data being published refer to the three scenarios of the plan contained in the approved tables. 121 of 19 December 2018 and with Resolution of the Metropolitan Council n. 24 of 04/21/2021 definitively approved the Pums-Urban plan for sustainable mobility of the Metrocittà.