The Moscow Metro is one of the busiest and most efficient rapid transit systems in the world, currently transporting approximately 7 to 9 million passengers every single day in 2026. To put this in perspective, during the morning and evening "rush hours" (8:00–10:00 AM and 5:00–8:00 PM), the intervals between trains on major lines like the Circle Line (Koltsevaya) and the Radial lines can be as short as 90 seconds. This high frequency is necessary to manage the massive flow of commuters in a city of over 13 million people. In 2026, the system has seen further expansion with the full operation of the Big Circle Line (BKL), which has helped redistribute passenger traffic and reduce congestion in the central stations. Despite the crowds, the system is famous for its cleanliness and punctuality. For a traveler, the sheer volume of people can be overwhelming at major interchange hubs like Komsomolskaya or Kievskaya, so it is a peer-to-peer essential to avoid traveling during the peak hours if you want to appreciate the "Palaces for the People" architecture without being swept along by the tidal wave of commuters.