From June 2001, NSB introduced additional rush-hour trains between Trondheim and Steinkjer, giving a half-hour headway. NSB introduced their Class 93 locomotives in 2001: starting on 7 January they were used on the Salten Commuter Rail, which ran a higher frequency of departures between Rognan and Bodø. This service has become a success. This was not the case when the same trains were put in as replacements on the intercity trains. Although allowing for almost an hour faster travel, they had fewer amenities and little space. Passengers protested, and after trials from 2003, Di 4s with carriages were reintroduced during the summers from 2003 and all year from 2007. From 2006 the sleeper services were cut from Mosjøen and Mo i Rana.