electric multiple unit
An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a numbe ...
(EMU) train type operated by the
private railway
A private railway is a railroad run by a private business entity (usually a corporation but not need be), as opposed to a railroad run by a public sector.
Japan
In Japan, , commonly simply ''private railway'', refers to a public transit railway o ...
operator
Odakyu Electric Railway
, commonly known as Odakyū, is a major railway company based in Tokyo, Japan, best known for its ''Romancecar'' series of limited express trains from Tokyo to Odawara, Enoshima, Tama New Town, and Hakone.
The Odakyu Electric Railway Company fo ...
in Japan since 2007.
Design
The trains are based on the
JR East
The is a major passenger railway company in Japan and is the largest of the seven Japan Railways Group companies. The company name is officially abbreviated as JR-EAST or JR East in English, and as in Japanese. The company's headquarters are ...
E233-2000 series
The is a commuter and suburban electric multiple unit (EMU) train type developed by East Japan Railway Company (JR East) from the earlier E231 series and the E531 series design. The first train was introduced in December 2006 for use on the ChÅ ...
narrow-body EMU design to permit subway running. The traction motors are fully enclosed to reduce environmental noise.
Formation
, 15 ten-car sets are in service, numbered 4051 to 4065, and formed as follows.
* Cars 3, 7, and 9 each have one single-arm pantograph.
* Car 2 is designated as a mildly air-conditioned car.
Interior
Passenger accommodation consists of longitudinal bench seating throughout. Cars 1 and 10 have wheelchair spaces.
File:Inside of OER 4000.jpg, Interior view
File:Seat of OER 4000.jpg, Seating
File:Seat of OER 4000 2.jpg,
Tip-up seat
A folding seat is a seat that folds away so as to occupy less space. When installed on a transit bus, it makes room for a wheelchair or two. When installed on a passenger car, it provides extra seating.
In churches, it may have a projection cal ...
for wheelchair space
File:Priority seat of OER 4000.jpg, Priority seating
History
The first train was delivered in May 2007, and the trains entered service in September 2007 on inter-running services between Odakyu and the
Tokyo Metro Chiyoda Line
The is a subway line owned and operated by Tokyo Metro in Tokyo, Japan. On average, the line carries 1,447,730 passengers daily (2017), the second highest of the Tokyo Metro network, behind the Tozai Line (1,642,378).1000 series sets, which were cascaded to surface lines to replace older 5000 and 5200 series sets.
From 26 March 2016, the 4000 series began operation on the JR East Joban Line.
4000 series
The 4000 series is a CMOS logic family of integrated circuits (ICs) first introduced in 1968 by RCA. It had a supply voltage range of 5V to 20V, which is much wider than any contemporary logic family.
Almost all IC manufacturers active during thi ...