【悲劇】相鉄が作りたくなかった路線、相鉄新横浜線と、東急新横浜線に見放されて冷遇される駅。相鉄はなぜ2本も都心直通線を作ったのか？紆余曲折を経た神奈川東部方面線とは何なのか？東横線大倉山駅で考える。

The Sotetsu-Tokyu Shin-Yokohama Line is finally opening. But why did Sotetsu decide to build two lines directly connecting to the city center? In this article, we'll explore the history of the Kanagawa Eastern Line (ST Line), which served as the basis for the Sotetsu-Tokyu Shin-Yokohama Line, and explore what forces were at work in building two lines, one with Tokyu and one with JR connections. We'll explore the background to this by visiting stations that were given short shrift, contrary to initial expectations.