For the first three years street trams operated by Kristiania Sporveisselskab went the 1.5 km route to Bryn .
After the full line opened , Akersbanerne could never reach agreement with Oslo Sporveier , and not until 1937 did they run trams into the city center .
For the first three years street trams operated by Kristiania Sporveisselskab went the 1.5 km route to Bryn , but after the full line opened , Akersbanerne could never reach agreement with Oslo Sporveier , and not until 1937 did they run trams into the city center .