The Union Cabinet Thursday approved three out of six corridors of the Delhi Metro's proposed Phase IV, Finance Minister Arun Jaitely said.
According to the government, corridors of Mukundpur-Maujpur, RK Ashram-Janakpuri West and Aero City-Tughlakabad have been approved by the Cabinet.
There will be 17 underground and 29 elevated stations in the three corridors whose total length will be 61.679 km.
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