Line and the Nordhavnen Metro. Just as M1 and M2 share a section of the existing metro, the City Circle Line shares a 6-station section with the M4 line. Initially, two possible routes were considered, after an even bigger screening of ideas. In December 2005, it was announced that the Copenhagen and Frederiksberg municipalities had selected the Frederiksberg route; the purpose is to cover areas not yet served by S-trains or the Metro. The finished City Circle Line has been promoted as playing a heavy influence upon much of Copenhagen's current transport network. The transit agency Movia projects up to 34 million passengers switch from buses to the Metro annually. Once the line is completed, 85 per cent of all homes, work places and educational facilities in Copenhagen's inner city area, as well as the surrounding neighbourhoods, shall be less than a ten-minute walk from either a metro or train station. It has been projected for the line is used by approximately 240,000 passengers per day. It is fully automated, being operated using a driverless system that provides 24/7 service coverage and at a peak frequency between trains of 100 seconds. It is intended for trains on the line to achieve an average speed of 40km/h during regular service. As such, performing a round journey on the line is estimated takes approximately 29 minutes. Stations The stations of the City Circle Line are all underground, with easy access from the street level to the platform. The structure of the stations is largely identical to that of the existing Copenhagen Metro stations. They are built at a depth of approximately 19 meters using cut-and-cover methods; a standardised box structure has been adopted, measuring 64 meters by 20 meters. Each one is outfitted with island platforms of between 7 meters and 9 meters. Stations are listed counterclockwise, beginning in the southeast. København H (Copenhagen Central Station, interchange with S-trains, DSB and SJ) Rådhuspladsen (City Hall Square) Gammel Strand near Christiansborg Palace Kongens Nytorv (interchange with M1 and M2) Marmorkirken (The Marble Church) Østerport (interchange with S-trains and DSB) Trianglen (close to the Parken Stadium) Poul Henningsens Plads Vibenshus Runddel Skjolds Plads Nørrebro (interchange with S-trains) Nørrebros Runddel Nuuks Plads Aksel Møllers Have Frederiksberg (interchange with M1 and M2) Frederiksberg Allé Enghave Plads While the stations have a similar structure to those of the current Metro, they have been designed with more varied