LINE Name Country City Regional Rail
M4 TR Istanbul No
CONSTRUCTION DETAILS Start year End year Length (in km) Tunnel (in km) Tunnel Stations Source
2005 2012 21.7 21.7 100% 16 metro istanbul, media
COST INFORMATION Cost (in M) Currency PPP rate Year PPP Real cost (in M$) Cost/km (in M$) Source
890.0 EUR 2.4 2009 2136 98.4 media
REFERENCE https://railturkey.org/2016/10/15/kadikoy-kartal-tavsantepe-metro-m4/2/