The Prague Metro is a subway, underground public transportation network in Prague, Czech Republic. It is the fastest means of transportation around the city and serves about one and a half million passengers a day, which makes it the seventh busiest metro system in Europe and the most-used in the world on a per capita basis.
The Prague Metro comprises three lines, each of which is represented by its own colour on the maps and signs: Line A (green), Line B (yellow) and Line C (red). There are 57 stations in total (three of which are transfer stations) connected by nearly 60 kilometres of mostly underground railways. The metro service operates between 4-5 am till midnight from Sunday till Thursday (on Friday and Saturday the last trains journey start at 1am), with about two- to three-minute intervals between trains during rush hours. Over 500 million passengers use the Prague Metro every year.
The metro is run by the Prague Public Transit Company Co. Inc. (in Czech officially Dopravní podnik hlavního města Prahy a.s.) which manages all means of public transport around the city (the metro, tramways, buses, the funicular to Petřín Hill and the chairlift inside Prague Zoo). Since 1993, this system has been connected to commuter trains and buses and also to "park-and-ride" parking lots. Together they form a public transportation network reaching further from the city called Prague Integrated Transport (Pražská integrovaná doprava—PID). Whilst the large system is zonally priced, the metro is fully inside the central zone.
Many Prague Metro stations are quite large, with several entrances spaced relatively far apart. This can often lead to confusion for tourists, especially at the central hubs such as Můstek or Muzeum: it is not enough to merely get off at the right station; one must also choose the right way out to the surface, otherwise one can easily find oneself five or ten minutes' walking distance from the required destination. However, in general the stations are well signposted even for those unfamiliar with local language.