SNCF Class Z 50000 SNCF Class Z 50000 The SNCF Z 50000 is an electric multiple unit train built by Bombardier Transportation (manufacturer's designation SPACIUM 3.O6) for the French rail operator SNCF, for use under Transilien operations in the Île-de-France. It is commonly called ‘Francilien’, and sometimes ‘NAT’ (for , which was its project name). In 2004, the STIF (regional transit authority) began the tendering process for approximately 180 new EMUs to replace SNCF's aging stainless-steel single-deck suburban fleet. This stock nicknamed "inox " (short for "[acier] inoxydable": stainless steel) comprised EMUs Classes Z 5300, Z 6100, Z 6400 and similar push-pull trainsets known
Argentine State Railway companies in the country, operating a railway network of 6,617 km. By 1936 the railway network had been extended to 9,690 km. Most of the railway lines built by the Argentine state were metre gauge because of financial reasons. In 1937 the State company began to acquire some existing companies with the purpose of competing against British railway companies. In 1948 Argentine State Company (along with British and French companies) became part of Ferrocarriles Argentinos after nationalisation of the railway network, headed by then-President Juan Domingo Perón. Therefore, the Central Northern rail lines were added to General Belgrano Railway network