Toyo Rapid Railway

Overview
The Tōyō Rapid Railway Line (東葉高速線, Tōyō Kōsoku-sen) is a rapid transit line owned by Tōyō Rapid Railway Co., Ltd., which runs between Nishi-Funabashi Station in Funabashi, Chiba and Tōyō-Katsutadai Station in Yachiyo, Chiba. The name Tōyō (東葉) comes from the characters for Tokyo and Chiba. The line is essentially an extension of the Tokyo Metro Tōzai Line.

History
Construction work on the line commenced in July 1984, and the line was fully opened on 27 April 1996.[1] Limited-stop "Toyo Rapid" (東葉快速, Tōyō Kaisoku) services were introduced on the line from the start of the 4 December 1999 timetable revision, but such services in the "up" direction (toward Tokyo) were discontinued in 2009, and the "down" limited-stop services were discontinued from the start of the revised timetable on 15 March 2014.[2]

Former rolling stock
Toyo Rapid 1000 Series (retired in 2006)

tokyo metro 5000 series( retired in 2007)