Yokohama Municipal Subway Green Line
A Green Line 10000 series train in December 2021
Native name横浜市営地下鉄グリーンライン
Line number4
TypeRapid transit
SystemThe logo of Yokohama Municipal Subway. Yokohama Municipal Subway
Operator(s)Yokohama City Transportation Bureau
Rolling stock10000 series EMUs[1]
Daily ridership129,104 daily (FY2014)
Opened30 March 2008; 15 years ago (2008-03-30)
Line length13.0 km (8.1 mi)
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification1,500 V DC from overhead catenary
Operating speed80 km/h (50 mph)

The Yokohama Municipal Subway Green Line (横浜市営地下鉄グリーンライン, Yokohama Shiei Chikatetsu Gurīn Rain) is a rapid transit line serving Yokohama in Kanagawa Prefecture, Japan. It is the shorter of the two lines in the Yokohama Municipal Subway system operated by Yokohama City Transportation Bureau. Its formal designation is Line 4, and it is the first section to be opened of a proposed Yokohama Circular Railway (横浜環状鉄道, Yokohama Kanjō Tetsudō).

The Green Line links Nakayama on the JR East Yokohama Line and Hiyoshi on the Tokyu Toyoko Line with 13.0 kilometers (8.1 mi) of track and 10 stations. Construction began in 2001 and the new line started operating on 30 March 2008.[2] It uses linear motor propulsion and a full journey takes approximately 21 minutes one way.


Platforms are above ground at Kawawachō, Center-Kita, and Center-Minami stations and underground at other stations.

No. Station Japanese Distance (km) Transfers Location
(in Yokohama)
G01 Nakayama 中山 0.0 JH Yokohama Line Midori-ku
G02 Kawawachō 川和町 1.7   Tsuzuki-ku
G03 Tsuzuki-fureainooka 都筑ふれあいの丘 3.1  
G04 Center-Minami センター南 4.8 Yokohama Municipal Subway Blue Line (Line 3, B29)
G05 Center-Kita センター北 5.7 Yokohama Municipal Subway Blue Line (Line 3, B30)
G06 Kita-Yamata 北山田 7.4  
G07 Higashi-Yamata 東山田 8.8  
G08 Takata 高田 10.3   Kōhoku-ku
G09 Hiyoshi-Honchō 日吉本町 11.6  
G10 Hiyoshi 日吉 13.0

Rolling stock

A 10000 series train under test on the Green Line in July 2006

The Green Line is operated by 17 4-car 10000 series EMUs. In 2018, it was announced that 10 of these would be lengthened to six cars each by 2024 as a measure to ease overcrowding on the Green Line.[3] The first lengthened trainset is expected to enter revenue service on 24 September 2022.[4]


  1. ^ 私鉄車両編成表 2017 [Private Railway Rolling Stock Formations – 2017] (in Japanese). Japan: Kotsu Shimbunsha. 25 July 2017. p. 83. ISBN 978-4-330-81317-2.
  2. ^ Ohno, Masato (31 March 2008). "地上も走るリニア式地下鉄 - ヨコハマの新たな足、横浜市営地下鉄グリーンラインが開業". MyNavi Corporation (in Japanese). Archived from the original on 27 April 2022. Retrieved 30 January 2024.
  3. ^ 横浜市グリーンラインに大型投資 混雑緩和へ6両化 [Large-scale investment on Yokohama Municipal Green Line – Lengthening to 6 cars to ease overcrowding]. Kanaloco (in Japanese). Japan: Kanagawa Shimbun. 30 January 2018. Archived from the original on 31 January 2018. Retrieved 31 January 2018.
  4. ^ "横浜市営地下鉄グリーンライン、6両編成の運行は9/24から" [Yokohama Municipal Subway Green Line, 6-car train operation from 9/24]. Tetsudo Shimbun (in Japanese). 5 September 2022. Archived from the original on 5 September 2022. Retrieved 5 September 2022.