Prospekt Mira
The Kaluzhsko–Rizhskaya line (, ) is a line of the Moscow Metro, that originally existed as two separate radial lines, Rizhskaya and Kaluzhskaya opened in 1958 and 1962, respectively. Only in 1971 were they united into a single line as the central section connecting the stations Oktyabrskaya to Prospekt Mira was completed. It was also the first line in Moscow to have a cross-platform transfer. The Rizhsky radius is roughly aligned with a northern avenue Prospekt Mira, while the Kaluzhskiy radius generally follows a southwestern street Profsoyuznaya Ulitsa. Presently, the Kaluzhsko–Rizhskaya line is the third busiest in the system with a passenger traffic rate of 1.015 million per day. It has a bi-directional length of , and a travel time of 56 minutes, typically it is coloured orange on Metro maps and numbered 6.