ˌɑːpɚɹˈeɪʃənz ɑːɹ kˈæɹid ˈaʊt baɪ spˈoːɹveɪən tˈiːbˈeɪnən ˌɔn kˈɑːntɹækt wɪð ɹˈuːɾɚ, ðə pˈʌblɪk tɹˈænspoːɹt ɐθˈɔːɹɪɾi ɪn ˈɑːsloʊ ænd ˈækɚʃəs.
Operations are carried out by Sporveien T-banen on contract with Ruter, the public transport authority in Oslo and Akershus.