Tobu 8000 series

Tobu 8000 series
10-car formation on the Tojo Line, June 2008
In service	1963–Present
Manufacturer	Alna Kōki, Fuji Heavy Industries, Kisha Seizō, Nippon Sharyo, Tokyu Car Corporation
Constructed	1963–1983
Refurbishment	1986–2008
Number built	712 vehicles
Number in service	424 vehicles (as of April 2013)
Formation	2/3/4/6/8 cars per trainset
Operator(s)	Tobu Railway
Depot(s)	Kasukabe, Nanakōdai, Tatebayashi, Shinrinkōen, Shin-Tochigi
Line(s) served	Isesaki Line, Kameido Line, Kiryu Line, Urban Park Line, Sano Line, Tojo Line, Ogose Line, Daishi Line
Specifications
Car body construction	Steel
Car length	20 m (65 ft 7 in)
Width	2,850 mm (9 ft 4 in)
Doors	4 pairs per side
Maximum speed	100 km/h (60 mph)
Electric system(s)	1,500 V DC
Current collection method	Overhead lines
Track gauge	1,067 mm (3 ft 6 in)

The Tobu 8000 series (東武8000系, Tōbu 8000-kei^?) is a commuter electric multiple unit (EMU) train type operated by the private railway operator Tobu Railway in Japan since 1963. A total of 712 vehicles were built between 1963 and 1983, making this the most numerous EMU type operated by any private railway operator in Japan.

The Isesaki Line fleet consists of 2-, 4-, and 6-car trainsets based at Kasukabe, Tatebayashi, and Shin-Tochigi depots. A fleet of 3-car 800 and 850 series trains converted from 8000 series units is also based at Tatebayashi Depot.

The Kameido Line uses 2-car trainsets modified for driver-only operation.

Kiryu Line services include 800 and 850 series 3-car driver-only-operation sets introduced from the start of the revised timetable on 18 March 2006.

The Urban Park Line fleet based at Nanakōdai Depot consists of 2-, 4-, and 6-car trainsets.

Sano Line services include 800 and 850 series 3-car driver-only-operation sets introduced from the start of the revised timetable on 18 March 2006.

The Tōjō Line fleet based at Shinrinkōen Depot consists of 2-, 4-, 6-, and 8-car trainsets. These are operated as 10-car formations for services to/from Ikebukuro and as 4-car formations for local driver-only-operation services north of Ogawamachi.

From the start of the revised timetable on 14 June 2008, only refurbished 4-car driver-only-operation sets are used on the Ogose Line.