Tehran's Metro system is planned to consist of a total of eight lines; six lines (Lines 1–5 and 7), five of which are metro-service lines (Lines 1–4 and 7), are currently operational. Lines 1 and 2 cross each other at Imam Khomeini station. Line 5 is a suburban rail line that attaches to the Line 2 at the Tehran (Sadeghieh) station; it extends into the Karaj area and is connected to the rail line of city of Karaj.
Line 1 consists of 30 stations.
Line 2 consists of 22 stations.
Tehran Metro Line 3 consist of 22 stations.
Line 4 consists of 22 operating stations.
Line 5 is a suburban rail line that consists of 11 stations.
Line 6 is a line that consists of 30 stations.
Line 7 is a line that consists of 26 stations.