Found this one squashed on the road in my village--the last one was outside of it. It's almost certainly a puff adder, the most common snake in South Africa. It's pretty venomous, which is a little disconcerting. Not as bad as a black mamba but bad enough.
Nevertheless, I reckon snakebites should be avoidable for the wary. I don't go tromping around in the bush, mostly just in the riverbed or where the walking is nice and open. Things like this make me keep my eyes open, and indoors at night.