Just returned from Wagga Wagga, mostly up the Newell Hwy. They have droped the speed limit from 110 to 100 last month. Two weeks before the school holidays we had a speed blitz with marked, unmarked and cycle cops everywhere.
While travelling down only saw 1 cop, at a T-bone near Forbes (nobody seriously hurt). On return -none.
Seriously tailgated by many truckies though. They complain about pulling in front of them while they are stoping, this doesn't seem to apply if they decide to tailgate,

, but thats another thread.
I choose to travel at the speed limit. For most it seems 100km/h really reads 110.