Prime Minister Nawaz Sharif performed the ground breaking of Green Line bus project in Karachi on February 26, 2016. The total length of the track from Surjani to Saddar is 22 km, while the infrastructure length is 18.4 km of which 11.7 km is elevated. Later, the route was extended to include the areas of Jamia Cloth Market, I.I. Chundrigarh Road, and Sindh Secretariat.

The Karachi green line (or Karachi Metro bus service) is mass rapid transit bus system and is expected to carry 300,000 passengers daily. The estimated cost of the project is Rs.24.6 billion and the expected completion date is December 2017.