Coming from a place (Orlando) with a few toll roads of our own (one going east/west through the heart and one going around the perimiter)....

I think toll roads are a viable option. If people/politicians aren't keen for a new public transport system (i.e. light rail), then toll roads seem to be the best option.

As long as the crucial routes (Harbour Bridge, southern motorway, western motorway, etc) aren't made into toll roads I'm all for it.

But if they make the Harbour Bridge a toll road....that acheives nothing. Toll roads (in my opinion) should be alternative routes to the main route. And tolling an existing crucial route will only make traffic worse and add unnecessary costs for motorists who don't really have another choice (well, they could spend an extra 30-40 minutes going around the harbour).