The Tokyu Shin-Yokohama Line (東急新横浜線) is a line run by Tokyu Electric Railway (東急電鉄). It runs from Shin-Yokohama Station to Hiyoshi Station in Kōhoku ward, Yokohama, Kanagawa.
History
On 13 December 2018 the name Tokyu Shin-Yokohama Line was announced for the section from Shin-Yokohama to Hiyoshi. On 27 January 2022 the company formally announced that the line would open in March 2023. Through running was planned with the Sōtetsu Shin-Yokohama Line, the Sōtetsu Main Line and the Izumino Line (いずみ野線). Trains were also to run from the Meguro Line to the Toei Mita Line or the Tokyo Metro Namboku Line and Saitama Rapid Railway line, and from the Tōyoko Line to the Tokyo Metro Fukutoshin Line and the Tōbu Tōjō Line.
On 22 July 2022 a rail-fastening ceremony was held at Shin-Yokohama station. On 16 September 2022 the route letters SH were set for station numbering. On 21 October 2022 the official station names were set, and the stations from Hiyoshi onward became Shin-Tsunashima and Shin-Yokohama. On 3 November 2022 trial running on the line began and ran until March 2023. On 24 November 2022 the outline of the opening timetable was announced: local trains, which ran only as through trains to the Meguro Line, and express trains, with all trains stopping at every station. On 16 December 2022 the opening date was officially set for 18 March 2023.
On 5 March 2023 a completion ceremony was held at Shin-Yokohama station, attended by the presidents of Sōtetsu and Tokyu. On 18 March 2023 the Shin-Yokohama to Hiyoshi section opened as the Tokyu Shin-Yokohama Line. Through running began from Shin-Yokohama over the Sōtetsu Shin-Yokohama Line to the Sōtetsu Main Line and the Izumino Line, and from Hiyoshi over the Meguro Line to the Toei Mita Line or the Tokyo Metro Namboku Line and Saitama Rapid Railway, and over the Tōyoko Line to the Tokyo Metro Fukutoshin Line and the Tōbu Tōjō Line. One-man operation began on the Tōyoko Line and this line. Platform doors came into use at Shin-Yokohama and Shin-Tsunashima on the opening day.
On 20 January 2024 the train stopping position at Hiyoshi, including on the Meguro Line, was moved towards Shin-Yokohama. On 16 March 2024 the first timetable change since the opening was made. On weekday early mornings, the local trains on the Meguro Line through service gained one more train. In the daytime, the trains rose from 6 to 8 an hour.
On 10 October 2025 a design error in signal control was found at two places at Shin-Yokohama station, and it was repaired on 20 October 2025. On 1 November 2025 the departure sounds were renewed in turn on the Tōyoko Line, including this line.
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Written by an AI from the line's history on Japanese Wikipedia, nothing else, and checked by a program for dates and numbers that are not in those facts. It can still be wrong. Adapted from Japanese Wikipedia, CC BY-SA 4.0; this text is shared under the same licence.