History
Ihara Station opened on 1 June 1960 on the Toyohashi Railroad's Higashida Main Line, in Ihara-machi, Toyohashi, Aichi. On 31 July 1982 a branch (shisen) was inaugurated to Undō-Kōen-mae, and at that time additional safety zones and a branch turnout were installed at the stop.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-22.
Notes
Just past the intersection at Ihara, the branch toward Undō-Kōen-mae diverges around a 11-metre-radius curve — the sharpest curve on any railway line in Japan. The Toyohashi Railroad's ultra-low-floor T1000-series cars cannot navigate this curve and so are restricted to Akaiwaguchi-bound services; the partially-low-floor Mo 800 series could not enter the branch either until raised body-height and removal of bogie covers allowed it from April 2018.