Iron Ore Line
Sweden is the only country with which Norway shares railway borders. Sweden and Norway share gauge, loading gauge, signaling system, electric system, GSM-R and automatic trains stop systems. Most rolling stock can cross the border. There are four border crossings: the Østfold Line–Norway/Vänern Line, the Kongsvinger Line–Värmland Line, the Meråker Line–Central Line and the Ofoten Line–Iron Ore Line. All crossings have electric traction on the Swedish side, but the Meråker Line lacks it on the Norwegian side. There have previously been operational train ferries to Denmark.