that they were going to replace the bogie frames for all the Class 71 and 73, as well as Class 93 trains, as part of the compensation deal with NSB. Bergen and Østfold The first of the B-series trains were delivered for trial runs on 7 March 2001. In May, NSB stated that they would never be able to operate the trains with the speeds they had previously stated they could, and that at least for the next year, the tilting trains would operate at the same speeds as conventional trains. On 17 September 2001, the trains were put into service on the Bergen Line between Oslo and Bergen. During the following winter, the trains had problems running through snowdrift unless they were running at a sufficiently high speed. Because part of the Bergen Line had frost heave, trains were forced to drive extra slowly, causing trains to get stuck. NSB stated that tests had shown that Class 73 was better able to do this than El 16, which had previously been the main locomotive on the line, although Class 73 did not do as well as the modern El 18. In January 2002, NSB started rebuilding the A-series trains with a larger baggage compartment. This was largely because of insufficient space for passengers to take skis with them. The B-series was originally put into service on the Sørland Line between Kristiansand and Stavanger, as part of the brand Agenda. The B-series had been planned for use on the Østfold Line, but because the latter is largely a commuter service with many standing passengers, the company was not comfortable using the trains there until the issues regarding the axles and wheels had been resolved. NSB also stated that they were dissatisfied with that the A-series and B-series were not capable of working together. The B-series' lack of a manned dining car meant that they could not be used on intercity trains, while the A-series' smaller seating capacity meant it could not be used on regional trains. The B-series was put into service on the Østfold Line on 6 January 2003. NSB stated that the new class would offer better comfort and reduce the railway's problems from delays caused by icing. On the Østfold Line, the maximum speed is . From June 2003, NSB discontinued the brands Agenda and Signatur. The same year, NSB adjusted the timetables so that the trains