Tokyu 8090 series

The Tokyu 8090 series (東急8090系) and the related Tokyu 8590 series (東急8590系) were commuter electric multiple unit (EMU) train types that were operated by the private railway operator Tokyu Corporation in the Kanto region of Japan from 1980 until 2019.

Design
The trains have lightweight stainless steel car bodies. The car bodies were designed using computer analysis while maintaining the necessary strength. Compared to the preceding 8000 series trains, these trains weigh approximately 2 tons lighter per car. Tokyu operated the 8090 series as five- and eight-car sets, with three and six motored cars per trainset. The 8590 series cab cars have emergency exit doors in the front to permit operation on underground lines.

History
The 8090 series were introduced on the Tokyu Toyoko Line in 1980.

Withdrawal
From 1 May 2013, sets 8081 and 8099, which were the last two 8090 series sets on the Oimachi Line received farewell headmarks on the cab fronts just before their retirement.

On 11 December 2018, 10-car set 8695 was withdrawn from service on the Den-en-toshi Line. On 27 February 2019, set 8694, which was the last remaining 8590 series set, ended operation on the Den-en-toshi Line and forwarded to Onda factory, thus marking the end of operation for the 8090 series with Tokyu Corporation as a whole.

Chichibu Railway
Former Tokyu 8090 series cars were transferred to Chichibu Railway, which designated them as 7500 and 7800 series.

Toyama Chihō Railway
Toyama Chihō Railway operates a number of former Tokyu 8590 series trains, classified as 17480 series (17480形). They first entered service on 2 November 2013 and were put into regular operation from 3 November that same year. The first 5 cars (Deha 8592+Deha 8692, DeHa 8593+DeHa 8693 and DeHa 8191) were transferred to Toyama Chihō Railway in July 2013. Four more cars (Deha 8594+Deha 8694 and DeHa 8595+DeHa 8695) followed suit in October 2019.