Genoa Metro
The Genoa Metro () is a rapid transit consisting of a single line that connects the centre of Genoa, Italy with the suburb of Rivarolo Ligure, to the north-west of the city centre. The service is currently managed by Azienda Mobilità e Trasporti (AMT), which provides public transport for the city of Genoa. It is a long (standard gauge) double-track line and is electrified at 750 volts DC. It has a direct connection with the underground suburban station under Trenitalia's mainline railway station, "Principe". History. The origins of a subway in Genoa date back to the  beginning of the twentieth century; in 1907 Carlo Pfalz, who had already designed the Zecca-Righi funicular, was the first to explore the construction of an underground railway with electric traction. Several projects, including that of the engineer Angelo Massardo and those of Renzo Picasso (1911 and 1930), were proposed without being realized. Instead, a tram system was built which was abandoned in 1966. The only attempt to introduce an alternative means of transport was made on the occasion of the International Exhibition of Marine and Maritime Hygiene of 1914: it was Telfer, an elevated monorail that connected the Port  (Giano Pier area) to the exhibition area in Piazza di Francia, in front of the Brignole station. The infrastructure was then abandoned and finally demolished in 1918. The first section, opened on 13 June 1990 in time for the football World Cup, was between the stations of "Brin" and "Dinegro". The line was extended to "Principe" in 1992, to "San Giorgio-Caricamento" in 2003, to "De Ferrari" (underground station at Piazza De Ferrari) in 2005, and to "Brignole" in 2012. Future expansion. In March 2018, the Italian government announced the investment for an extension of one station at either end  of the line, "Canepari" to the northwest and "Martinez" to the east. In addition, a further three train sets would be bought to accommodate the extension. Rolling Stock. First Generation. The first generation rolling stock on the system consists of 6 sets of articulated cars. They were built by Ansaldo, and introduced in 1990. They are derived from the Tram2000 tram used in Switzerland, however they differ in being standard gauge. Each vehicle consists of two sections with one central articulation, which are supported by three bogies, the two outer bogies are motored, which the central bogie does not. The  vehicles are bidirectional and have four sets of door on each side. The interior of the cars consists of blue seats in a transverse arrangement. The train are numbered 01 to 06. Second Generation. The second generation of train on the line is made up of a group of 12 trains. Numbered 12 to 24. These trains, like the first generation, each train is made up of two sections resting on three bogies, with the outer two motored and the middle one non-motored. The trains are also bidirectional, however have six doors on each side, and the seats are  arranged longitudinally. The trains were built by Ansaldo and introduced in 1992. Third Generation. The most recent units on the line, those of the third generation, significantly differ to the previous two. They were delivered by Hitachi Rail Italy in 2016. There are 7 trains numbered 31 to 37. The trains are longer than previous generations at 39 meters and four articulated sections with five bogies. Of the five bogies, the central three are motored, which the outer two are not. There is a total four doors per each side of the bidirectional sets. Fourth generation. In anticipation of the  planned extensions and considering the now thirty-year service of the first generation trains, in 2020 the Municipality obtained a loan of 70 million Euros to purchase 14 new generation trains. In 2021 Hitachi Rail signed the contract to supply the new trains: it is expected that this supply will be delivered on a monthly basis (one train per month) between 2023 and 2024, coinciding with the inauguration of the Brin-Canepari and Brignole-Martinez routes.