I wrote to the RTA re signage. Their response is:
Dear Mr Chapman
Thank you for your email dated 3 January 2010 regarding the new Safety Cameras.
In June 2009, the then Minister for Roads Michael Daley, introduced changes to the Road Transport (Safety and Traffic Management) Act 1999 to improve safety on rural and urban roads throughout New South Wales. The changes include the replacement of wet-film red light cameras with new digital red light and speed capable technology. These new digital red light/speed capable cameras are called Safety Cameras.
The RTA commenced the progressive activation of the Safety Cameras on 18 December 2009. Warning letters will be generated for a short period at all new camera installation sites. The grace period has been established to encourage motorists to slow down and comply with traffic light rules, prior to infringements being enforced.
Please be advised that 'Safety Camera Ahead' advisory signage is not a legal requirement in NSW however a single sign is located on each road approaching the intersection.
For further information on Safety Cameras, please log onto the RTA website on
http://whome.rta.nsw.gov.au/roadsafety/speedandspeedcameras/safetycameras/index.html.All fines from traffic and road safety offences are collected by NSW Treasury and redistributed into a range of community facilities including schools, hospitals and transport, including road funding. As such, funds being collected from the community are returned to the community.
We trust this information is of assistance.
Compliance and Enforcement Branch
Roads and Traffic Authority