The expected date for the start of trial operations is 2015.

In March 1993 part of the route was opened for trial operation.

After one year of trial operation, the wharf was officially opened on December 31, 2006.

Construction works were finished in early spring 2011, the trial operation ended on 31 March.

The line opened to trial operation in December 2009.

It has been in trial operation since autumn 2011.

After several weeks of trial operation, the station was formally opened on 27 May 1999.

On September 15, 1981, after a decade of trial operation, the initial line was opened to full public use.

As of July 2012, Line 2 is under public trial operations.

Construction was completed in late 2008, and trial operations began in early 2009.