Found quite a comprehensive article on festive season road safety. I know it may be a little bit late, but a lot of the tips are pertinent all year round and the rest... consider it an early start for next year.
On a similar note, I drove from Johannesburg to Durban this December and was very impressed by the traffic police presence. I must have driven past about 7 fixed cameras and almost a dozen temporary police operated speed cameras. It really felt like there was a concerted effort to keep the roads safe over the festive season, a very worthy cause. I must admit that of late there really has been a noticeable difference in road safety in South Africa. Lets keep up the momentum and make our roads safer for all!