It was also the first metro line in Saint Petersburg to feature a unique platform type that soon became dubbed as "Horizontal Lift".

[1] The line cuts Saint Petersburg on a north-south axis and is generally coloured blue on Metro maps.

In 2006, as an extension was opened, it became the longest line on the system.

The line is served by the Moskovskoe (№ 3) depot, and has 56 six-carriage trains assigned to it.

However it is very likely that some of the central stations will be receiving much needed repairs internally and externally.