Shanghai Rail Transit usually uses an inter-area two-way power supply mode.
[1] Initially, Siemens (global market share: 14%), Alstom (global market share: 18%) and Bombardier (global market share: 23%) directly sold the A-class trains to China, and then moved their production bases to China to produce and assemble the A-class trains by cooperating with large Chinese locomotive manufacturers.
Shanghai Electric and Alstom set up a joint venture company, Shanghai Alstom Transportation Equipment Co., Ltd., Changchun Railway Passenger Vehicle Co., Ltd. and Bombardier set up a joint venture company, and Zhuzhou Electric Locomotive Co., Ltd. cooperated with Siemens.
[2] On September 22, 2007 the first A-class train with independent intellectual property rights was produced at the production base of Rail Transit Equipment Company in Minhang.
In the beginning lines were built in an era where moving block CBTC systems were expensive and China had no experience with them.
Therefore, lines 1-5 had fixed block CBTC systems capable of headways above 2.5 minutes.
Trains will be removed and transported to CRRC Zhuzhou Locomotive for renovation and rebuilt.
Renovation includes structural repairs, extend their lifespans for an additional 14 years.
This includes redesigning a different style livery of red, yellow and white on bodies and trains' front.
It was moved to Shanghai Circuit Depot with cars 114331-114372 from the crash site for inspection.