by the Landesnahverkehrsgesellschaft Niedersachsen (state public transport company of Lower Saxony) predicted that a reactivated service would carry 3,600 passengers a day, the VLO completely renovated and modernised the section. DB Netz AG took into operation an electronic interlocking on the section On 3 May 2012. The stations of Quelle, Steinhagen and Halle have since been centrally controlled. The line has been controlled from a regional control centre in Lage (which has the acronym of Lzf) since 25 January 2013. Rollingstock Because of the gradient locomotives with small wheels were used in the steam era. Freight locomotives were preferred because of the operation of mixed trains together with passenger trains. Pure passenger locomotives such as the Prussian P 8 still ran in the 1960s on replacement services, while DR class 24 locomotives, which were also used, were unpopular with the staff because of their centrifugal tendency. From the 1940s, DRB class 50 locomotives were used on the line and continued in use until the late 1960s. Prussian T 14.1 locomotives were used on the Haller Willem from 1930 until the winter 1962 timetable change as stock locomotives. Prussian T 16 and Prussian T 16.1 locomotives were also used as stock locomotives from the late 1920s until the early 1960s. With the electrification in other parts of the Federal Republic, DRB class 50 locomotives were used for regional services over the whole line from 1963. DRB class 41 locomotives were used on the "flat section" between Bielefeld and Dissen-Bad Rothenfelde. In the 1960s, freight trains were so well utilised that the evening freight train 8888 from Bielefeld to Osnabrück marshalling yard was hauled regularly from Dissen by two coupled class 50 locomotives. DB Class V 100 diesel locomotives were used from 1963 to 1983 to haul freight and passenger trains, even for shunting operations in stations. DB class 216 locomotives were used for individual services regularly from the mid-1970s, shortly after their deployment in Oldenburg and Osnabrück. Freight trains were operated from 1972 until the early 1990s using DB class V 90 locomotives. For a few years from 1975 until the cessation of passenger service on the northern section of the line, DB class V 200.0 locomotives were used on the Haller Willem. Battery electric multiple units were used on the line from 1914; their use ended in 1944. Photographs show the use of DR class VT 75 that had replaced