M12 (Istanbul Metro)

Line M12, officially referred to as the M12 60. Yıl Parkı-Kazım Karabekir line, is a proposed rapid transit line of the Istanbul Metro system, currently under construction in the Asian part of Istanbul, Turkey.
Built by the Metropolitan Municipality of Istanbul, the line will be long with 11 stations. The travel time between the end stations will be 26 minutes. It is expected that it will carry hourly around 35,000 riders in one direction. The line will run through three districts of Istanbul, namely Kadıköy, Ataşehir and Ümraniye. It will connect to other rapid transit lines at Tütüncü Mehmet Efendi station to Marmaray, at Yenisahra to M4 Kadıköy–Sabiha Gökçen Airport, and at Çarşı to M5 Üsküdar–Çekmeköy.
The investment budget of the construction is 2.376 billion. The construction of the metro began with work at the southern terminus, 60. Yıl Parkı, in August 2017. The tender of the project was canceled on 3 January 2018.
The new mayor Ekrem İmamoğlu announced that the metropolitan municipality restarted the construction works. The first test runs on the line occurred on March 14, 2024, between Göztepe and Kazım Karabekir. The line is expected to be operational by December 2026.