Seibu Yūrakuchō Line

Not to be confused with Tokyo Metro Yūrakuchō Line.

Seibu Yūrakuchō Line
A lineup of Seibu Yūrakuchō Line rolling stock, June 2009
Overview
Owner	Seibu Railway
Locale	Nerima, Tokyo
Termini	Nerima Kotake-Mukaihara
Stations	3
Service
Type	Commuter rail
Technical
Line length	2.6 km (1.6 mi)
Track gauge	1,067 mm (3 ft 6 in)

The Seibu Yūrakuchō Line (西武有楽町線, Seibu Yūrakuchō-sen) is a commuter subway line operated by the private railway operator Seibu Railway in Japan. The line links the Seibu Ikebukuro Line at Nerima Station with the Tokyo Metro Yūrakuchō Line and Tokyo Metro Fukutoshin Line at Kotake-Mukaihara Station in Nerima, Tokyo.

Stations

No.	Station	Japanese	Distance (km)	Semi express	Rapid	Rapid express	Transfers	Location
Through service to/from Seibu Ikebukuro Line
SI06	Nerima	練馬	0.0	O	O	O	Seibu Ikebukuro Line (through service) Seibu Toshima Line Toei Oedo Line	Nerima, Tokyo
SI38	Shin-Sakuradai	新桜台	1.4	O	O	O
SI37	Kotake-Mukaihara	小竹向原	2.6	O	O	O	Tokyo Metro Yūrakuchō Line Tokyo Metro Fukutoshin Line
Through service to/from Tokyo Metro Yūrakuchō Line and Tokyo Metro Fukutoshin Line

Rolling stock

Seibu trains

• Seibu 6000 series

Tokyo Metro trains

• Tokyo Metro 7000 series
• Tokyo Metro 10000 series

Tokyu trains

• Tokyu 5050-4000 series (since 10 September 2012)

Past rolling stock

• Tokyo Metro 07 series

• 
  Seibu 6000 series
• 
  Tokyo Metro 7000 series
• 
  Tokyo Metro 10000 series
• 
  Tokyu 5050-4000 series

History

The line started out with the section between Shin-Sakuradai and Kotake-Mukaihara, and began through operations with the TRTA (now Tokyo Metro) Yūrakuchō Subway Line. At this point, the line did not connect with any other Seibu Line, so only TRTA trainsets were used. In 1994, the line was extended from Shin-Sakuradai to Nerima, connecting with the Seibu Ikebukuro Line. Because of track elevation work at Nerima, only one track was used. Later in 1998, the section between Shin-Sakuradai and Nerima became double-tracked, and through services with the Ikebukuro Line began.

Station numbering was introduced on all Seibu Railway lines during fiscal 2012, with Seibu Yurakucho Line stations numbered prefixed with the letters "SI" (part of the Seibu Ikebukuro group of lines).

From 10 September 2012, 10-car 5050-4000 series sets entered revenue service on the Seibu Yurakucho Line and Seibu Ikebukuro Line, with inter-running through to the Tokyo Metro Fukutoshin Line.