The price of this triangle upgrade will probably have to include rerailing and resleepering, as this hitherto lightly used track is bound to be in poor condition. This leg of the triangle is also probably on a sharp 10chain (200m) curve.
Dubbo has not had a signal box in use for many years.
All Interlockings and Signals are controlled by ARTC at Broadmeadow including the releases for K and Z frames.
I doubt that the price would include resleepering and rerailing as the track is ok between K and Z frames and sees rail traffic most days and on some days more than once in a 24hr period.
The cost would be just to signal and motorise the points to remove each frame and all the associated wiring for power/signals ect involved in intergrating them into whats already in use at Dubbo.
Rail traffic that uses this part of Dubbo triangle includes QUBE containerised Cotton and Grain trains from Coonamble branch heading to Port Botany, Westons Grain trains off branch that go to Enfield, also the Flechers Train to Port Botany that runs 3 return services a week. Plus occasional PN Grain Services.
Quite a busy Junction that should have had K and Z frame removed and points motorised and signalled when the rest of Dubbo was done 20 odd years ago.
When it is done it will certainly speed up the transit of freight trains through Dubbo and reduce delays at Cobborah Rd level crossing in Dubbo.