Toei 12-000 series

The Toei 12-000 series is an electric multiple unit train type operated by the Tokyo Metropolitan Bureau of Transportation, known as Toei, on the Toei Oedo Line subway in Tokyo, Japan. It is a linear motor train: two prototype cars delivered by Tokyu Car Corporation in 1986 were converted to linear motor propulsion in 1987 and tested at Magome Depot, and in December 1988 it was announced that the new Line 12 would use the technology. Production trains with aluminium bodies were delivered from September 1990 by Nippon Sharyo and Hitachi and entered revenue service in December 1991, eventually totalling 424 vehicles formed as 53 eight-car sets. The first-batch sets began withdrawal in June 2016 and the last was retired on 30 June 2016, while the two prototype cars are preserved at Chihaya Flower Park in Toshima, Tokyo.