HH Tunnel

Various Danish governments over the years have rejected the idea, especially freight trains and more road traffic through North Zealand such as the proposed Ring 5 motorway.

The 11 km long road tunnel is planned to be located between south suburbs of both cities.

Despite the emphasis on the "HH" route, it has been suggested that a link between Landskrona (in Sweden) and Nordhavn, in north Copenhagen, using a combination of a low level bridge and a short tunnel, below a central shipping lane in Øresund, would be easier to build,[citation needed] mainly because no new road and railway would be needed Copenhagen-Helsingør.

Since there is no room prepared on the ground for a direct road connection, either a 10 km long tunnel is needed, or using the existing motorway on a long detour past Kongens Lyngby which probably does not have the needed capacity.

A ring track connecting Landskrona (Sweden) => Nordhavn Ydre (Denmark) - Østerport - Nørreport - Copenhagen H - Ørestad - Tårnby - Copenhagen Airport => Hyllie (Sweden) - Triangeln - Malmö C - Lund - Landskrona, with Inter Regional trains clockwise and anti-clockwise three or four times per hour, also shortens the time between Lund, Landskrona and the four adjoining stations (in Copenhagen).