Resumen
Metropolitan transport system and method that makes it possible to maximise fulfilment of journey time commitments and network coverage by running a first train (1) in a first direction, defined from a starting point to a finishing point of a route that includes a plurality of station stops (2, 2'), where said first train (1) runs through a tunnel (3) that has two levels (4, 5), said first train (1) running on a first level (4) of the tunnel (3) and stopping at all of the station stops (2, 2') on the route; the method also including the running of a second train (6) in the first direction of the route and on a second level (5) of the tunnel (3), where said second train (6) does not stop at all of the station stops (2, 2') on the route.