 It would have required investments of 120 million Norwegian krone, including a connection for trains to be able to run from the east end of the line and westwards on the Nordland Line, and investments to noise insulate the Tyholt Tunnel.In a 2005 report, SINTEF recommended that if such a service should be introduced, it should have four services per hour and operated with light rail rolling stock as a circle line with a tail southwards to Heimdal or Melhus.The report further commented that the new connection at Lademoen would have a 3.6-percent gradient, which would be too steep for mainline trains.