Delayed and never started lines according to the Istanbul rail system investment program
Delayed Lines by Rail System Investment Program: 57.46 km
Kadikoy-Kartal: (21.66 km) 2011 will be finished. It's not over in time.
Bagcilar-Olympic: (15.8 km) 2012 would end in the middle. Still waiting for the opening.
Üsküdar-Çekmeköy: (20 km) 2013 is planned to be finished.
According to the Rail System Investment Program Lines that Never Start: 51,5 km.
Ataşehir-Monoray: (11 km). 2012, and 2013 will be finished. Why didn't it start.
Besiktas-Giyimkent-Bağcılar: (24.5 km) 2012 began in the middle, and will end at the beginning of the 2015.
Bakirkoy-Beylikdiuzu (25 km) 2013 start and 2015 also finished.
Bakirkoy-Bagcilar: (9 km). He would start at the beginning of 2013 and finish at 2014.
Yenikapı Bakırköy: (7 km) 2013 should start at the beginning. Because it's planned to end at 2015.
Ünalan-Mecidiyeköy (11,8 km) planned to be built between 2014 UM 2015. No work involved in planning.