 In 1990 and 1994 , NSB published two reports regarding the future of intercity rail transport in Norway . The reports concluded that there would have to be invested 56 billion Norwegian krone ( NOK ) in new infrastructure if the main corridors were to be built as high @-@ speed railways . Instead , the use of tilting technology was proposed to allow higher speeds on existing lines . In 1992 , the Parliament of Norway voted to build Oslo Airport , Gardermoen and connect it to the capital with the high @-@ speed Gardermoen Line . It was decided that the service should take 19 minutes — and not one minute more . When issuing invitations to tenders , NSB specified this time limit as a criterion , which was also the reason the line was dimensioned for 210 kilometers per hour ( 130 mph ) . 
