Gothenburg. Services could also run to Denmark and further south. Norway imports a lot of food and other goods but most of it enters Norway on road. The Østfold Line has a 11% share of the freight between the Oslo area and Swedish west coast. Two steep hills, Brynsbakken on the Loenga–Alnabru Line and Tistedalsbakken southeast of Halden are currently major obstacles, which limit train size and set locomotive requirements. Proposals have been made to build new lines to bypass these hills. One alternative to the south would be to build a new railway from around Berg to Skee on the Bohus Line in Sweden. The traffic on the Western Line will be so dense, especially during rush hour north of Moss, that it is possible that all freight trains may be routed via the Eastern Line. This will probably also mean that the existing railway between Sarpsborg and Halden will be kept, although it will probably be demolished north of Sarpsborg. The signaling system is scheduled to be renewed and replaced with the European Train Control System, with planned completion in 2030. References Bibliography External links Østfold Line at the Norwegian State Railways Railway lines in Oslo Railway lines in Viken Railway lines opened in 1879 1879 establishments in Norway Electric railways in Norway