"wherever the entire street has been pedestrianised" my understanding is that this is dependent as to whether the space is defined as a footpath under NSW law, which if it is then by extent cycling is not allowed (but may, of course, be tolerated).

Arguably we can leave off any access restrictions since I don't recall any specific signage beyond the usual no entry for trams.

Latest official documentation I could find is this from Dec 2019, which says it is not allowed, for a different section of the route: https://news.cityofsydney.nsw.gov.au/articles/bikes-and-the-new-light-rail-corridor