The snake on the sign is a Cape cobra. Not a plaything, by any means.
Its profile is much the same as the Egyptian cobra.
We also have the boomslang (especially up there north of the Vaal), the black mamba and the puff adder.
Actually, I once found a puff adder no more than 20 metres from my property boundary in a piece of open veld. I did not disturb it.
Need to wear boots in the veld!
Regards,
Mike