Line 1 finally opened for revenue service on July 11, 2011.

Number 9 is expected to return to revenue service in October 2012.

The line was put into revenue service on January 7, 2011.

Several of them have been used on revenue services since August 2010.

Revenue service on the four lines began June 15, 1906.

The line opened for revenue service on December 25, 1997.

The second set, 13002, entered revenue service on 30 May 2012.

It plans to start revenue service on July 28, 2010.

The middle track is generally not used in revenue service.

Executives at the other companies said they had not heard from the revenue service about the matter.