Yokohama Municipal Subway Blue Line

Yokohama Municipal Subway Blue Line
A 3000R series train on the Blue Line in October 2019
Overview
Native name横浜市営地下鉄ブルーライン
OwnerYokohama City Transportation Bureau
Line number1 & 3
LocaleYokohama, Fujisawa
Termini
Stations32
Service
TypeRapid transit
SystemYokohama Municipal Subway
ServicesLine 1 (Shonandai–Kannai)
Line 3 (Kannai–Azamino)
Operator(s)Yokohama City Transportation Bureau
Depot(s)Kaminagaya, Nippa
Rolling stock3000 series
4000 series
Daily ridership513,897 (FY2014)
History
Opened16 December 1972; 51 years ago (1972-12-16)
Technical
Line length40.4 km (25.1 mi) (Line 1: 19.7 km, Line 3: 20.7 km)
Number of tracks2
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification750 V DC third rail
Operating speed80 km/h (50 mph)

The Yokohama Municipal Subway Blue Line (横浜市営地下鉄ブルーライン, Yokohama Shiei Chikatetsu Burū Rain) is a rapid transit line serving Yokohama in Kanagawa Prefecture, Japan. It is the longer of the two lines in the Yokohama Municipal Subway system operated by Yokohama City Transportation Bureau, and is the second-longest subway line in Japan at 40.4 kilometers (25.1 mi) in length, surpassed only by the 40.7-kilometer (25.3 mi) long Toei Oedo Line in Tokyo. Unlike most metro lines in Japan, it uses third rail for power instead of overhead lines. It is the most recent newly built steel-wheel railway line in Japan to do so.

The Blue Line is divided into two operating segments: Line 3 from Azamino in Aoba-ku, Yokohama to Kannai, and Line 1 from Kannai to Shōnandai in Fujisawa. Local and rapid services operate continuously on both lines 1 and 3 as a single service.

Following the opening of the Green Line on 30 March 2008, the line was nicknamed the "Blue Line". The line color is blue and the line symbol used in the station numbering is B.