Kaluzhsko-Rizhskaya line

The Kaluzhsko-Rizhskaya line (Russian: Калу́жско-Ри́жская ли́ния, IPA: [kɐˈɫuʂskə ˈrʲiʂskəjə ˈlʲinʲɪjə]) (Line 6; Orange 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 Moscow Metro system with a passenger traffic rate of 1.015 million per day. It has a bi-directional length of 37.8 kilometres (23.5 mi), and a travel time of 56 minutes, typically it is coloured orange on Metro maps and numbered 6.