One, very important objection, to encouraging the use of taxis in SA cities.  They crowd the roads, stop unexpectedly, allover the place, and cause a mass of incidents, and accidents.  Far too many taxi drivers are either unlicensed,  or just unable to drive properly.  Jo'burg is a nightmare of taxis, and now,  Cape Town is becoming ditto.  Busses would be a more preferable option,  anyday.