 | original (PDF) on 2 March 2014. Retrieved 16 July 2022. "小田急、代々木上原駅～梅ヶ丘駅間の複々線化で工事期間を2018年度まで延長" [Odakyu, extend the construction period until fiscal 2018... 27 KB (873 words) - 12:05, 27 March 2024 |
 | ダイヤ改正を実施します" [14 March 2020 Timetable Revision] (PDF). 29 January 2020. "西武新宿線「幻の複々線化」正式に中止へ 「無期限延期」から四半世紀". 乗りものニュース (in Japanese). Retrieved 28 March 2022.... 31 KB (1,568 words) - 17:15, 5 April 2024 |
 | Japanese). Keio Corporation. 18 January 2013. Retrieved 23 February 2013. 小田急線の複々線化完了、下北沢駅で開通式 [Odakyu Line Multiple Line Conversion Complete, Opening Ceremony... 11 KB (821 words) - 12:28, 26 August 2023 |
 | the Moving Image Showa Academia Musicae List of railway stations in Japan 複々線化プロジェクト [Quadruple-tracking Project] (in Japanese). 2016. Archived from the... 12 KB (789 words) - 12:53, 20 March 2023 |
 | Station than at Kobe Station. Most of the JR Kobe Line runs on four tracks (複々線, Fukufukusen), meaning that there are two tracks for each direction. Similar... 14 KB (1,401 words) - 22:54, 6 February 2024 |
 | from the original on 12 June 2020. Retrieved 19 June 2020. "目蒲線を活用した東横線の複々線化と新たな都心直通". Tokyu Corporation (in Japanese). Japan. Retrieved 12 April 2024... 11 KB (1,066 words) - 02:57, 14 April 2024 |
 | 16.9 kilometers from Osaka. Most of the JR Kobe Line runs on four tracks (複々線, Fukufukusen), meaning that there are two tracks for each direction. Similar... 9 KB (871 words) - 06:10, 25 February 2023 |