 In 1991 , Oslo <unk> presented plans involving a rapid transit circle line in Oslo , connecting the newly built hospital Rikshospitalet with the rest of the city . A detailed suggestion was presented by Oslo <unk> in August 1996 . In the local newspaper <unk> <unk> there was a debate on whether there should be a ring line from Berg along the National Road 150 towards <unk> over Rikshospitalet , or whether the Ullevål Hageby Line should be extended from John Colletts <unk> to Rikshospitalet , thereby creating a correspondence with the Sognsvann Line at the new station <unk> . In the first plans , Berg was meant to be a station on the new ring line . This plan was discarded since local residents feared noise pollution and destroyed <unk> . Even though Berg was not made a station on the Ring Line , noise shields were put up along the Sognsvann Line . 
