For perioden 1997-2008 ligger det fast, at AS Oslo Sporveier videregav den årlige kompensation til AS Sporveisbussene i henhold til betingelserne i transportaftalen, som i alt væsentligt synes at have formaliseret den tidligere uskrevne administrative praksis for beregning af den årlige kompensation [84].
For the period 1997–2008 it is undisputed that AS Oslo Sporveier passed on the annual compensation to AS Sporveisbussene, according to the terms of the Transport Agreement, which appears in essence to have formalised the previous unwritten administrative practice of calculating the annual compensation [84].