In the first phase, the bus ran from the confluence of Model Colony and Tank Chowk at Malir Cantt to Shahrah-e-Faisal, Metropole and II Chundrigar Road Tower.

[6] In January 2023, the government of Sindh announced the Pink-bus, a modification of the bus service which was aimed to be women-only.

[8] Currently there is a expansion programme announced by the government to add additional[9] 60 buses.

[11] As of April 2023, eleven routes have been outlined for the bus service in Karachi.

*R-1 (Pink) is the eight route outlined for the PBS in Karachi and is the first women-only bus service in Pakistan.