I have made a list of mobile and fix camera and school zones for Garmin back in 2007. The zip file is attached.
You need a POI uploader for it.
http://www8.garmin.com/products/poiloader/
Then upload the following csv files.
Disclaimer: They are not the complete list. The list is made mid 2007 and some data is missing. For Victorian the location of Eastlink and extra hume hwy cameras are not added for instance.
Interstate users please notes a lot of points are repeated and please adjust this with your excel program.
I will keep searching for more updating POIs and adjust them... coz the wording is very long and cannot easily read.