The Norwegian state rail network administration emerged in 1996 from the Norwegian State Railways, when railroad operations were separated and privatized as NSB BA. JBV is responsible for the construction and maintenance of the rail network, including stations, for access to the network, managing rail traffic and the schedules, as well as for the future planning for the railroad infrastructure. All of the maintenance locomotives belong to JBV, including for example those units that carry out winter service. The Di 3 628 is a NOHAB locomotive from the roster of the former NSB that has been rebuilt and reequipped. During the long Scandinavian winter it has large snowplows mounted on it.