Line 1 (Shanghai Metro)


Line 1 is a north-south line of the Shanghai Metro. It runs from in the north, via to in the south. The first line to open in the Shanghai Metro system, Line 1 serves many important points in Shanghai, including and Xujiahui. Due to the large number of important locations served, this line is extremely busy, with a daily ridership of over 1,000,000 passengers. The line is colored red on system maps. Generally, the line runs at grade beside the Shanghai–Hangzhou railway in the south, underground in the city center and elevated on the second deck of the North–South Elevated Road in the North.

Service routes

Important stations

Signalling

The first line in the system, Shanghai Metro was conceived and designed during 1980s, when fixed block signalling and track circuit based train control was still considered a state-of-art approach to automatic train operation. The signalling system was designed by CASCO, a signalling manufacturer owned jointly by China Railway Signal & Communication Group Corporation and General Railway Signal, and was largely based on the system designed by GRS for the Washington Metro. Coded audio-frequency track circuits are used for both train detection and transmission of speed commands, as well as limited train-to-wayside communication for automatic train supervision. Train operation between stations and station stop can be automatic, while doors are controlled manually by train operators.From 2013 to 2019, the system went through a wholesale renewal. Obsolete components as relay interlockings were replaced by modern microprocessor-based ones, but interfaces were kept unchanged. As of 2020, the original design is expected to serve two additional decades.

Headways

History

SegmentCommencementLengthStationName
Shanghai South — Xujiahui28 May 19934
Xujiahui — Shanghai10 April 19958
Xinzhuang — Shanghai South28 December 19964Southern extension
Shanghai — Gongfu Xincun28 December 200491st Northern extension
Gongfu Xincun — Fujin Road29 December 200732nd Northern extension