RTA Incompetence in NSW

Nothing to do with 4x4 but tried to take the kids to the local snow around Sydney last weekend and discovered the following.
Around 10.00am radio advertised Western Hwy thru mountains and the Bells Line Of Road were closed - We were on the latter and sudenly at Kurrajong came across large sign advisinr road was closed because of ice and snow. (At 11.00am!!!) - A bit bloody late on the road anyway.
Stopped, along with other motorists, and asked local service staion prop - he indicated no one had returned all morning so he suspected someone forgot to take down or turn off the sign - We pressed on and there was no problems - Passed a few police cars coming the other way, they may have just opened the road, I will give them benefit of doubt.
Later in the day went down to the caves at ? (mental block) long winding road down and as I got to the actual caves there was a huge string of vehicles coming up - like George St in peak hour. Intended to go up the mountain the other side and look for snow up there on way to Oberon and Kanagra Walls, usually a good place for the kids - road closed $#@%%$#@@
Turned around to retrace my steps and there is a huge electronic sign on the original road down - Road closed between 11.45am and 1.45pm daily - I worked out we had arrived down around 12.00 so the traffic we met had been stuck down there for at least two hours and had all been leaving at 11.45am.
No warnings before decending to caves. No consideration to allow 4wd to use the other exit.
I am not going near the caves again - might get stuck down there for a couple of days next time and been forced to pay the exhorbitant prices they charge at the shops and for accomodation.
The RTA in NSW really does have alot to answer for.