The NSW government has made its first significant investment in a future light rail extension after buying a privately owned site blocking the likely route in Newcastle West.
Investigators are studying CCTV vision from Carlton train station to determine how a pram carrying twin two-year-old girls was able to roll onto the tracks.
Mr Scully said the Illawarra Rail Resilience Plan, which was funded in the latest state budget, will examine the rail connection, but he does not know what the project would cost.