The structure of the railway sector in Sweden has become one of the most deregulated in Europe. Reform in 1988 resulted in the creation of a separate Infrastructure Manager (Banverket) and a Railway Undertaker. Both organisations were controlled directly by the Swedish government, but with different roles. During the last 15 years the market has gone through a significant evolution with the rise of a number of new RUs. Furthermore, the responsibility for the infrastructure is no longer with Trafikverket (the successor of Banverket), but a number of IMs who are in charge of different parts of the network.