The evaluation of the traffic conditions in the control zone concerned can be effected manually on VDU screens and at a later date will also be capable of being performed automatically.
Ukukhangelwa kwiimeko zezihambe-ndlela kwindawo ekulawulwa kuyo ekubhekiselelwe kuyo ingasetyenziswa ngezandla kwisibonisi iYDU kwixesha elidlulileyo ujakukwazi ukwenziwa ngokuzenzelayo.