Functions of Aerodrome control towers
Aerodrome control towers shall issue information and clearances to aircraft under their control to achieve a safe, orderly and expeditious flow of air traffic on and in the vicinity of an aerodrome with the object of preventing collision(s) between:
aircraft flying within the designated area of responsibility of the control tower, including the aerodrome traffic circuits;
aircraft operating on the manoeuvring area,
aircraft landing and taking off;
aircraft and vehicles operating on the manoeuvring area,
aircraft on the manoeuvring area and obstructions on that area.