The new line will connect the existing lines 3 and 4.
https://www.budapesttimes.hu/hungary/construction-of-new-metro-line-starts-with-exploratory-drillings/
The construction of the first section of Budapest's metro line 5 has started with exploratory drillings at Kalvin Square, the Budapest development centre (BFK) told MTI on Wednesday.
https://www.budapesttimes.hu/hungary/construction-of-new-metro-line-starts-with-exploratory-drillings/
Construction of new metro line starts with exploratory drillings | The Budapest Times
www.budapesttimes.huThe construction of the first section of Budapest's metro line 5 has started with exploratory drillings at Kalvin Square, the Budapest development centre (BFK) told MTI on Wednesday.