Just recently got back from a trip to California, USA and one thing I noticed is that despite the speed limit being technically 65 mph on the freeways, most drivers did around 80-85 mph, even straight past cops and they didn't care one bit. Whereas in Australia, doing such speeds would usually result in a heavy fine and licence suspension in some states.
Every year more and more hidden speed cameras are being used in Australia, yet the road toll is around the same. Other countries, for instance the UK, has a road toll substantially lower than ours, despite it being common (haven't driven there but from friends who have driven there) it's also common to do 80-85 mph in the 70 mph motorways. Australian governments and police are hell bent on speed being the biggest killer in road accidents, when we only need to look at our European counterparts to see it's not the case.
@I like freestuff: If they were restricting the speed to 100km/hr, then they should not have spent so much money building a state of art road. They should have just run a grater over the dirt and slapped down some tar. Then it would be no different to every other 100km/hr road. Everytime I drive that section I simply cant understand why so much money was spent for 100km/hr rated road.