The Rea Vaya has a fleet of 277 busses and 58 stops along 58km. 
Govt solution- R15 billion for the above system.
My suggestion would have been - low-tech municipal bus system (like we had in the 60's to 80's), 277 busses at R800 000 each = R221 million.
Left hand side 2m x 25m indentations into pavement area with a bog-standard sheet metal bus stop at each, all at R200 000 each x 58 = R11.6 million
Upgrade existing bus sheds = (generously) R50million
Running costs paid by commuters.
You can fine-tune the above figures, but the total capital cost comes to something of the order of R282 million. I wonder why it cost them R15 billion?????????????????????????????