Abstract: Metropolitan transport method and system that allows maximizing journey time commitment and network coverage by running a first train in a first direction, defined from a starting point to a finishing point of a route including a plurality of stopping stations, where the first train runs through a tunnel having two levels, the first train running on a first level of the tunnel and stopping at all the stopping stations on the route; the method also including running a second train in the first direction of the route on the second level of the tunnel, where the second train does not stop at all the stopping stations on the route.