Safe driving requires the development of skills and judgement, and then the application of those skills and judgement. By concentrating almost exclusively on speed limit compliance as the primary criterion on which safety is judged, the myriad of other factors - observation, hazard perception, vehicle control, etc. - are diminished in their importance to the detriment of safety. It's about striking a balance, and I'm firmly of the view that the balance has become skewed in a way that harms safety rather than promotes it.
Driver education and training, focussing on skills development and use, would deliver significant benefits. But it's easier to dumb things down by having automated (or semi-automated) speed limit enforcement so that's what we have. The example of someone travelling at inappropriate speed for the conditions, but below the limit, on an NSL road demonstrates the failure of the speed limit compliance approach. And the answer isn't to reduce the limit.
So what does this look like in practice?
Scrap all speed limits and significantly increase the criteria to acquire a driving license?
Regular retesting?
Help me out and give me an idea; if you were the man in charge how you would turn this vision into a reality.