Roma Capitale planned and proposed metro lines. Future underground routes and rapid transit expansion projects before construction begins.
Roma Capitale metro and subway lines formally proposed or in active planning: future underground corridors announced, studied or included in urban transport master plans but not yet under construction. Shows where cities plan to extend rapid transit coverage — new orbital lines connecting suburbs without routing through the city centre, extensions to areas beyond the existing network and entirely new metro systems in cities currently without subway.
Roma Capitale has 283 proposed railway segments including 45 railway, 119 tram, 54 metro and 65 light rail.
Last update: 2026-06-03