Road Traffic Management Corporation (RTMC) acting executive manager Ntsiki Jolingana says they expect high traffic volumes as of Friday afternoon, peaking on Saturday and Sunday.
Officials have started the arduous process of identifying the victims, but with some of the bodies badly burned, police warned the process could take days or even weeks.
The Society for the Prevention of Cruelty to Animals (SPCA) has reported a sharp increase in cases over the festive period, with animals roaming the streets.