ɚɹˈɪdʒɪnəli ðə plˈæn wʌz tʊ ɛkstˈɛnd ðə lˈaɪn æz ɐn ˈʌndɚɡɹˌaʊnd lˈaɪn dᵻɹˈɛktli fɹʌm kˈoʊbənhˌævən ˈɛl tə ðə sˈɛntɚɹ ʌvðə sˈɪɾi, bˌʌt ˌoʊvɚ ðə kˈoːɹs ʌvðə nˈaɪntiːnhˈʌndɹɪd sˈɪksti z ɪt bɪkˌeɪm klˈɪɹ ðætðə fˈʌndɪŋ ɛnvˈaɪɹənmənt wʊd nˌɑːt səpˈoːɹt mˈɛtɹoʊ kənstɹˈʌkʃən ɪnðə foːɹsˈiːəbəl fjˈuːtʃɚ.
Originally the plan was to extend the line as an underground line directly from København L to the center of the city, but over the course of the 1960s it became clear that the funding environment would not support metro construction in the foreseeable future.