What is the safe working system used for the Canberra branch line? I was under the impression it was electric staff but I am sure that it has changed to CTC with John Holland.
The line was electric staff for a long time with the sections being:
Joppa Junction - Tarago
Tarago - Bungendore
Bungendore - Queanbeyan
Queanbeyan - Canberra
Ordinary Train Staff and Ticket working was introduced on the sections Joppa Junction - Tarago (I believe white staff?), Bungendore - Queanbeyan (green staff), and Queanbeyan - Canberra (I believe red staff) in preperation for the introduction of Train Order Working around 2008-2009 (I've got a picture of the safe notice that was hanging in the signal box at Bungendore that advised of the changeover to Staff and Ticket working, just can't remember the date) . For some reason electric staff working remained between Tarago and Bungendore.
AFAIK In August - September 2012 all Ordinary Staff and Ticket and electric staff working sections from Joppa Junction to Canberra were changed over to Train Order Working.
Train Order working is a system of safeworking where a train controller gives verbal commands to train drivers advising where to go from and to, where to stop, and where to cross other trains. The system is a lot more flexible then electric staff working as the train does not have to slow down or stop at every crossing loop or safeworking location to change staffs, if the section is clear, the train can just keep sailing through. It also solved the problem of copper wire being stolen from the lines that connected the staff instruments.