Line 10 (Italian: Linea dieci) of Metropolitana di Napoli was a proposed line which should have connected the Naples city centre with its north-eastern suburbs. The project has been abandoned due to the lack of funds.
History
In July 2003 the City of Naples adopted a plan for a line (Metro of Casoria) that would have connected the city centre (Piazza Cavour, connecting with Lines 1 and 2) to Naples International Airport at Capodichino (connecting with line 1), the neighboring municipality of Casoria and the high speed railway station in the municipality of Afragola.
References
Line 10 (Naples Metro) Wikipedia(Text) CC BY-SA