 Berg is served by line 6 on the Sognsvann Line , operated by Oslo T @-@ banedrift on contract with Ruter . The rapid transit serves the station every 15 minutes , except in the late evening and on weekend mornings , when there is a 30 @-@ minute headway . Travel time along the 6 @.@ 1 @-@ kilometre ( 3 @.@ 8 mi ) portion to Stortinget in the city center is 11 minutes . 
 Berg is served by line 6 on the Sognsvann Line , operated by Oslo T @-@ banedrift on contract with Ruter . The rapid transit <a href='uninflect' title='1'><mark>serves</mark></a> the station every 15 minutes , except in the late evening and on weekend mornings , when <a href='dey_it' title='2'><mark>there</mark></a> is a 30 @-@ minute headway . Travel time along the 6 @.@ 1 @-@ kilometre ( 3 @.@ 8 mi ) portion to Stortinget in the city center <a href='drop_aux' title='3'><mark>is</mark></a>11 minutes . 
Berg is served by line 6 on da Sognsvann Line , operated by Oslo T @-@ banedrift on contract with Ruter . The rapid transit serve the station every 15 mins , except in the late evening and on weekend mornings , when it is a 30 @-@ minute headway . Travel time along tda6 @.@ 1 @-@ kilometre ( 3 @.@ 8 mi ) portion to Stortinget in the city center 11 minutes .