Route M30 is a Metrobus route which operates between Taronga Zoo and Sydenham via Mosman, Sydney CBD, Sydney University and Newtown.
The service originally ran from Spit Junction to Enmore, beginning operation on 28 March 2010. On 25 April 2010, the service was extended to Sydenham as Enmore was consider to be a poor terminus location. From 4 October 2015, the service was changed to operate along Elizabeth Street in the City due to light rail construction on George Street. On 26 November 2017, the M30 was extended to Taronga Zoo.
The M30 runs every 10 minutes during peak periods, 15 minutes during off-peak weekday periods, and 20 minutes on weekends. It operates between 6am and 8pm daily.
The M30 usually operates using articulated “bendy” buses from North Sydney or Tempe depot. These buses are sometimes substituted by 12.5m buses.
Transport NSW Blog 