sentences:  DSBs preparations of the lines permanent standard procedures for one-man operation did however prove to be more difficult than first anticipated.As of September 2015 DSB is only planning to use one man operation at the local lines north and south of Aalborg - and far from all the way to Aarhus.DSB has also stated that the rest of the remaining timeline for implementing one man operations will be reevaluated DSB has pointed to a bureaucratic safety approval system with an independent safety assessor as the main reason for the lack of progress.