Sydney bus route 190X had route 150 renumbered 190 which was later renumbered again, it was also extended from Wynyard station to Railway Square.
On 3 August 1953, route 150 Palm Beach to Wynyard station was renumbered 190. In the 1990s, route 190 services were renumbered as L90 to designate it was a limited stops service. It was also extended from Wynyard station to Railway Square. 
