class articulated operated oslo norway variation developed german manufacturer 1950s axle vehicles doors right seat passengers abreast additional people able stand power output kilowatts provided motors end supplement central located metres long metres wide capable kilometres hour mph standard gauge built series units delivered second units delivered units built built norway numbered series vary slightly specifications ordered decision close finished delivered mainly serves lines advertising painted light blue history decided gradually close new delivered decided lines closed naturally retired time oslo vehicles company vehicles powered trailers working trailers following energy crisis 1970s political climate changed city council decided close vehicles bought 1950s started develop articulated variation axle based technology rome design delivered particularly germany tested oslo ordered vehicles planned delivery addition units license built delivery following year motors built norwegian company built germany transported oslo railway vehicle delivered april service july german built service september german numbered oslo world use controlled motors main fleet systems finland germany norwegian built delivered february service march unit service january numbered problems start technical problems occasional power failures overhead wires date able handle increase power usage service line line replacing class remaining series service line line line included light rail sections lines mix additional built series vehicle delivered august taken service october service august numbered september february germany following delivery lines needed supplement new summer line heritage stockholm sweden labor dispute operation oslo metro ownership metro trains including transferred owned limited company suggestions extend center section adding axle plans rejected company center section low floor easier access allow network step free access estimated series years service needs replaced plans new ordered operations system newer following delivery low floor pure articulated fleet newer series greater turning radius heavier axle load directional radius axle load makes impossible operate requiring lines use units extension received terminus balloon loop making necessary lines served units serve line continuation service operate lines service minute giving minute interval section served lines specifications articulated built exclusively oslo series different specifications designed built units germany additional units plus second series built outside oslo motors series delivered second series built norwegian subsidiary steel frame millimeters long millimeters wide weigh kilograms total capacity riders seated seating abreast series delivered proof seats proved uncomfortable replaced floor millimeters tracks doors right series single door left right door single match series double doors right left delivered color coded destination signs rolling signs replaced led type signs standard gauge powered air suspension hollow axle gear boxes wheels diameter millimeters distance millimeters power output kilowatts giving vehicle power output kilowatts maximum speed mph acceleration range mph limited meters second squared primary braking achieved dynamic brake capable regeneration allowing braking power fed overhead wires addition disc brakes capable advertising painted light blue series delivered deeper blue color tradition oslo match standard prior delivery second series single painted deep red match buses trains oslo metro negative feedback riders historic color kept
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