Yokohama Municipal Subway Blue Line

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Yokohama Municipal Subway Blue Line" – news · newspapers · books · scholar · JSTOR (April 2017) (Learn how and when to remove this message)

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
Owner	Yokohama City Transportation Bureau
Line number	1 & 3
Locale	Yokohama, Fujisawa
Termini	Shōnandai Azamino
Stations	32
Service
Type	Rapid transit
System	Yokohama Municipal Subway
Services	Line 1 (Shonandai–Kannai) Line 3 (Kannai–Azamino)
Operator(s)	Yokohama City Transportation Bureau
Depot(s)	Kaminagaya, Nippa
Rolling stock	3000 series 4000 series
Daily ridership	513,897 (FY2014)
History
Opened	16 December 1972; 51 years ago (1972-12-16)
Technical
Line length	40.4 km (25.1 mi) (Line 1: 19.7 km, Line 3: 20.7 km)
Number of tracks	2
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Operating speed	80 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.