From December 2012, a programme of refurbishment started, which will ultimately cover the entire fleet of 474 vehicles.[5] Interior improvements include new universal access toilets, provision of wheelchair spaces, and flip-up seating next to the doorways.[5] The first refurbished set, 4-car set K12, was returned to revenue service on 11 January 2013.[6]
References
Wikimedia Commons has media related to 221 series.
^Haraguchi, Takayuki (2009). Jr全車両: ビジュアル決定版 Encyclopedia of JR's Railway Cars: JR全車輌. Japan: Sekai Bunka. p. 79. ISBN978-4-418-09905-4.
^ abJēāru zensharyō handobukku: Rail Magazine 2009 JR全車輌ハンドブック2009 [JR Rolling Stock Handbook 2009]. Japan: Neko Publishing. 2009. pp. 271–272. ISBN978-4-7770-0836-0.
^Jr電車編成表 2013冬 JR電車編成表 2013冬 [JR EMU Formations - Winter 2013]. Japan: JRR. November 2012. p. 406. ISBN978-4-330-33112-6.
^ブルーリボン賞・ローレル賞 選定車両一覧 [Blue Ribbon & Laurel Prize Winners List]. jrc.gr.jp (in Japanese). Japan: Japan Railfan Club. 29 May 2012. Archived from the original on 2010-10-26. Retrieved 9 January 2013.
^ ab221系近郊型電車のリニューアルについて [221 series outer-suburban EMU refurbishment] (Press release) (in Japanese). West Japan Railway Company. 8 January 2013. Retrieved 8 January 2013.
^221系リニューアル車が営業運転を開始 [Refurbished 221 series in revenue service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 13 January 2013. Retrieved 13 January 2013.