[7] Formerly known as the Third Interchange Contour, the city adopted "Bolshaya koltsevaya liniya" as the official name of the line after a vote via the "Active Citizen" web portal.

[9] Although retaining the working name was the most popular option, members of the city’s council on transportation infrastructure suggested another vote.

Two reasons cited by transport expert Kirill Yankov were that all of the lines’ names to this point were in the feminine grammatical gender and that all the other line names were generally understood from a point of view of geography.

[8] The original plans called for a line that is 58 kilometres (36 mi) with 27 new stations.

The northeastern section was initially scheduled to be completed in 2018, but was delayed for two years until it was opened on 27 March 2020 and 31 December 2020.