Kaynarca-Pendik-Tuzla Metro Line Project consists of two parts, namely the Pendik Center - Kaynarca Center - Fevzi Çakmak Line and Tavşantepe - Kaynarca Center - İçmeler Line. This line, which will have a total length of approximately 12 km, consists of 8 stations.

Pendik Center – Kaynarca Center – Fevzi Çakmak Line will start from Pendik Central Station, which will be built next to Pendik station being operated currently as Marmaray and High Speed Train stations, and reach Kaynarca Central Station and from there, it will be integrated before the Fevzi Çakmak Station belonging to the Sabiha Gökçen Airport Rail System Connection, which is still under construction. The total length of the line is approximately 4.0 km.