Toshi Line 都市線

Overview
The Toshi Line (Labelled AT in the map) Is a loop line connecting the Inner parts of Tokyo with the Eastern Suburban area of Tokyo

It has 1,067mm track gauge and operates 8 or 12 car Trains

The route is Electrified at 1500V

Starts/Ends at Hamamatsu-Cho　浜松町, Although some trains only operate between Ichigaya and Kita Senju (Outer loop)in Rush Hours

History
The Toshi Line opened on 1885 between Hamamatsu-Cho and Ichigaya as the Roppongi Line.

The Roppongi Line was extended to Kita-Senju Station (North Termini) in 1902

The Roppongi Line was extended to Shinagawa Station (South Termini) in 1916.

The Roppongi Line was extended to Hikifune Station (Northern Termini) in 1959. In that same year, the line was Electrified and renaimed the Toshi Line.

The Toshi line was Extended to Shin-Kiba station (Northern/Eastern Termini) in 1970.

Limited stop services between Ichigaya and Kiba began in 1993

The loop was completed in 2013 and the Limited stop service covered the whole line.

The Line Abbreviation was changed from T to AT during the 2021 Naming Convention Reform