Montreal Metro Montreal Metro The Montreal Metro () is a rubber-tired, underground rapid transit system serving the city of Montreal, Quebec, Canada. The Metro, operated by the Société de transport de Montréal (STM), was inaugurated on October 14, 1966, during the tenure of Mayor Jean Drapeau. It has expanded since the 1960s from 26 stations on three separate lines to 68 stations on four lines totalling in length, serving the north, east and centre of the Island of Montreal with connections to Longueuil, via the Yellow Line, and Laval, via the Orange Line. The Montreal Metro is Canada's busiest rapid transit system,
Yellow Line (Montreal Metro) place on April 1, 1967. In the first four weeks, the station on Saint Helen's Island served only the construction workers of the Expo site. It finally opened to the public on April 28, 1967, the day after the official opening of Expo 67. In June 2008 the City of Montreal proposed a number of service improvements and Metro extensions, including projecting the Yellow Line from Berri-UQAM to McGill station to ease congestion on that part of the Green Line. In December 2011, an extension to Longueuil was announced. The former Agence métropolitaine de transport (now ARTM) published a study,