What kind of transit system is the M1 part of?
M1 (Copenhagen): M1 of the Copenhagen Metro, colored green on the map, runs from Vanløse to Vestamager. Copenhagen Metro: Copenhagen Metro (Danish: "Københavns Metro" ) is a 24/7 rapid transit system in Copenhagen, Denmark, serving the municipalities of Copenhagen, Frederiksberg, and Tårnby.
24/7 rapid transit system