During the 1970s, plans had existed for an extensive rapid transit system, with an underground section in the city center. Inspired by the successful Oslo Metro that had opened in 1966, similar plans were developed. The proposed network was close to the current long-term plans for the light rail system, and consisted of three branches from the city center to Flaktveit, Olsvik and the airport. Four-car trains would operate at ten-minute headways. The suggestion was discussed by the city council in 1973, but no decision was taken. As an alternative, expansion of the railway from Bergen to Eidsvåg, Åsane and Nesttun was proposed. Fast commuter trains could then be supplemented with buses.