First circular line in Chengdu opened as the trial operation. "Wisest Brain"
http://www.chinanews.com/m/cj/2017/12-04/8391884.shtml
(Summary of the article)
9 o'clock on December 6th, Chengdu Metro Line 7 began trial operation officially. Total length is 38.6km.
Initial rolling stocks are 44 cars. And, each train consists of type A's 6 cars.
Trains are operated at 80km/h at maximum, which can transport the largest people per train in Chengdu.
When Chengdu planned to build the complete circular line(Chengdu Metro Line 7), it had responsibility to record multi "First" things. They are "The longest line" "The largest number of the stations" "The largest number of the interchange stations".
Chengdu Metro Line adopted single track operation system, which firstly creates new concept "inner/outer circle"
Inner circle trains rotate clockwise, while outer circle trains do counterclockwise.
(Translation ends)
Though it's the first circle line in Chengdu, it's the 4th circle line in China after Beijing Metro Line 2, Shanghai Metro Line 4, Beijing Metro Line 10.
So, it won't be difficult to carry out circular train operation.
