is a rapid transit system that serves Yokohama in Kanagawa Prefecture, Japan, and is operated by the Yokohama City Transportation Bureau.
The network consists of two routes, the Blue Line and the Green Line which together extend for approximately 53.4 kilometres and include 42 stations.
The Yokohama Municipal Subway consists of three lines: Line 1, Line 3 and Line 4. Line 1 and 3 are operated as a single line, nicknamed the Blue Line, and Line 4 is nicknamed the Green Line. The Blue Line and Green Line monikers came into official use when the latter was added to the network on March 30, 2008.
Transfer between the Blue and Green Line is possible at Center-Kita and Center-Minami Stations. Feeder bus services from the western Kawasaki City area run to Azamino Station.
The "missing" Line 2 was planned to run from Kanagawa-Shinmachi Station via Yokohama Station to Byobugaura Station. The line was previously considered a bypass line for easing congestion on the Keikyà « Main Line; however, it was deemed unnecessary after the Keikyu Line increased its capacity.
The Blue Line (Lines 1/3) is operated as an integrated route of between Shà Ânandai Station in Fujisawa and Azamino Station. The Blue Line is Japan's second-longest subway line, after the Toei à Âedo Line in Tokyo.
In July 2011, a "mobile phone power off area" was set up in each car, and the use of mobile phones is officially banned except in other areas.
The Green Line (Line 4) opened on March 30, 2008, between Hiyoshi Station and Nakayama Station, operating distance (total extension distance ). It takes approximately 21 minutes from Hiyoshi to Nakayama station.
By April 2023, the lengthening of 4-car trains to 6-car trains had commenced, and by the end of fiscal year 2024, 10 of the 17 trains will be 6-car trains.
Similar to the Toei à Âedo Line, the Green Line uses linear induction motors for propulsion.
On 21 January 2020, Yokohama City and Kawasaki City announced the route and four new stations for the planned extension of the Blue Line from Azamino Station to Shin-Yurigaoka Station on the Odakyà « Odawara Line. Construction of this section is expected to be completed by 2030. In June 2020, the Transportation Bureau started environmental impact assessment procedures for the extension project.
The Green Line was built as part of a to construct a circular line in Yokohama. The full line will be a C-shaped line that stretches from Tsurumi Station via Hiyoshi Station, Nakayama Station, Futamata-gawa Station, Higashi-Totsuka Station, Kamià Âoka Station, and Negishi Station to Motomachi-Chà «kagai Station.
Numerical designations for the stations on the Blue Line were introduced in 2002, coinciding with Yokohama city hosting the finals of the 2002 FIFA World Cup and the subway's 30th anniversary, starting from Shonandai station (1) to Azamino station (32). With 32 stations on the line and 32 teams in the World Cup, each station was themed after a country. Alphabetical designations were added when the Green Line opened. The Blue Line stations are B01 through B32, while the Green Line stations start from Nakayama Station (G01) to Hiyoshi Station (G10). At two stationsâÂÂCenter-Minami Station and Center-Kita StationâÂÂwhere both lines overlap, a different station number is attached to each route.