London Underground with smaller trains that run in two circular tunnels ("tubes") with a diameter about . These lines have the exclusive use of a pair of tracks, except for the Piccadilly line, which shares track with the District line between Acton Town and Hanger Lane Junction and with the Metropolitan line between Rayners Lane and Uxbridge; and the Bakerloo line, which shares track with London Overground services north of Queen's Park. Fifty-five per cent of the system runs on the surface. There are of cut-and-cover tunnel and of tube tunnel. Many of the central London underground stations on deep-level tube routes
Termini (Rome Metro) be the only transfer point between lines; Line C will have transfers to Line A at Ottaviano and San Giovanni and to Line B at Colosseo. It will also mean that there will be no station on the system that will still serve all lines. This station has: Termini (Rome Metro) Termini is an underground station of the Rome Metro. The station was inaugurated on 10 February 1955 as a station on Line B, and later became an interchange with Line A. The station is found in Piazza dei Cinquecento, under the Termini rail terminal. Together, the two stations form