I think the problem with speed limits is people tend to focus on matching that speed, rather than focusing on driving to the conditions of the road. When I started driving I had an old LC Torana that could barely do 100 km/hr and I drove to the road conditions and the capabilities of my vehicle at the time. Many people these days think that technology and good tyres will save them when something unexpected happens. My motto, and this is what I stress to my 16 yo daughter who is learning to drive, is expect the unexpected. I think people should do skilled driving courses in their own car to learn its capabilities and theirs.