page_title: Lisbon Metro
section_title: The 1990s
hierarchical_section_title: Lisbon Metro / History / The 1990s
caption_attribution_description: Map of Lisbon Metro in March 1998
context_page_description: The Lisbon Metro is the rapid transit system of Lisbon, Portugal. Opened in December 1959, it was the first metro system in Portugal.
  As of 2017, the system's four lines total 44.5 kilometres of route and serve 56 stations.
context_section_description: In 1990, the Network Expansion Plan was presented, which included extensions from Rossio to Cais do Sodré and from Restauradores to Baixa-Chiado, splitting the Y in Rotunda (extending the branch from Picoas to a new station, Rato) and the extension Colégio Militar/Luz–Pontinha (including a new depot near the Pontinha station, PMO III).
  In 1991, the first prototype of the ML90 car series was presented, consisting of two triple units (motor-trailer-motor) of six cars (with the first unit being numbered M-201, R-202 and M-203), built by Sorefame/Bombardier. These cars had a digital destination sign, were generally more comfortable and could operate with or without the trailer. The motor cars in these two triple units were also the only ones to have a front door to the cab, which was not included in further batches.
  On 3 April 1993, the elevated Campo Grande station opened, along with the expansions Alvalade–Campo Grande and Cidade Universitária–Campo Grande. With this extensions, the network grew 5.0 km (3.1 mi). In the same month, the ML90 prototype cars were used for the first time.
  In 1993, the second Network Expansion Plan was presented, intended to serve Expo '98. It recommended that the Metro should operate the following routes by 1999:
   A  would run from the northwest end of the city at Pontinha to the east end of Baixa (Terreiro do Paço);
   B  would run from the Lumiar to Campolide;
   C  would run from Telheiras to the seaport at Cais do Sodré;
   D  would run from Alameda to the exposition site at Moscavide in the northeastern end of the city.
  The PMO II depot at Campo Grande was finished in the autumn of 1994 after eleven years of works. At the end of this year, the second batch of ML90 was ordered, consisting of 17 triple units (or 51 cars). On 15 July 1995, lines were finally split at Rotunda, with Metro now operating in two lines: Line A (blue), between Colégio Militar/Luz and Campo Grande, through Rossio, and Line B (yellow), between Campo Grande and Rotunda. The old Rotunda station (now Rotunda I) was extended from 75 to 105 metres and totally refurbished, while the new station (Rotunda II) already had a dock with 105 metres.
  By the end of 1996, the second batch of ML 90 (numbered M-207 to M-257) was ready; colors and materials used in this second batch differed somewhat from that made up the first. The rolling stock was now composed of 191 coaches: 80 of them ML7, 54 ML90 and 57 ML79. On 18 October 1997, the Seagull line expansion from Colégio Militar/Luz to Pontinha opened, expanding the network by 1.6 kilometres. In December of the same year, Rato opened, 0.6 km (0.37 mi) from Rotunda II. Orders for new rolling stock continued in 1997, when half of the cars now known as ML95 were delivered (19 electric triple units, motor-trail-motor, or 57 cars). These new coaches, which look similar to ML90, have some technical differences, like a different engine and electrical door control (unlike the pneumatic control used on its predecessors). The new logo of the Lisbon Metro was first inserted into these new coaches.
  1998 was a year when most of the said expansion projects were completed; as early as March the names of four stations had changed:
  Sete Rios → Jardim Zoológico
  Palhavã → Praça de Espanha
  Rotunda I and II → Marquês de Pombal I and II
  Socorro → Martim Moniz
  In April the section Rossio - Cais do Sodré (1.4 km (0.87 mi)) was opened, with two stations: Baixa-Chiado and Cais do Sodré, the latter connecting to the train and boat stations.
  The Red Line (Line D at the time) would be inaugurated on 19 May 1998, three days before the opening of Expo 98. This line was 5 km (3.1 mi) long and included five new stations: Alameda II, Olaias, Bela Vista, Chelas, and Oriente; the line began running six car trains beginning in June of that year on an experimental basis in order to satisfy the demand of passengers visiting Lisbon during Expo '98. By this time, the entire ML95 series had been delivered, numbered M-301 to M-414.
  Later in 1998, Olivais (in August) and Cabo Ruivo (in July) opened as infill stations on the Red Line
caption: Lisbon Metro System in March 1998, when the Green Line was created.
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