Circle line (London Underground) with the other London Underground sub-surface lines: the Hammersmith & City line from Hammersmith to just before Aldgate; the Metropolitan line from Baker Street to Aldgate; and the District line from Tower Hill station to Edgware Road station. The line is electrified with a four-rail DC system: a central conductor rail is energised at and a rail outside the running rail at , giving a potential difference of . The running rails are not electrified. Much of the double track railway from the Hammersmith terminus to Westbourne Park station is on a high brick viaduct. East of Westbourne Park the
Termini (Rome Metro) 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 the main public transport hub in the city. Termini is currently the only station in the Rome Metro system to serve both Lines A and B. However, when Line C is completed, Termini will still be a transfer point between Lines A and B but will no longer