Insen Line Train

...Vehicles were concentrated in the two major metropolitan areas of Tokyo and Osaka, and the tracks on which they operated were separate from those of medium- and long-distance trains, and the sections on which JNR trains operated were specifically called JNR sections or electric train sections. JNR trains were also called "Insyusen trams" during the era of the Railway Bureau, and "Ministry trams" during the era of the Ministry of Railways. When JNR was divided and privatized, JR East adopted the name "E-den" to replace JNR, but this name has not become widely used.

*Some of the terminology used in reference to the "Insen Train" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…東京，大阪の二大都市圏に集中的に車両が配属され，運転される線路も中･長距離列車とは分離され，国電の運転区間を特に国電区間，電車区間等と称していた。国電は鉄道院時代は院線電車，鉄道省時代には省線電車とも呼ばれた。国鉄の分割･民営化にあたり，国電に代わる名称としてJR東日本ではE電という呼名を採用したが，一般には普及していない。…

※「院線電車」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報