3 position signaling was commisioned from Sth Yarra to Ripponlea on Dec. 16 1917
3 position signaling was commisioned from Ripponlea to Elsternwick on May 13 1918
3 position signaling was commisioned from Elsternwick to Brighton Beach on July 18 1926
3 position signaling was commisioned from Brighton Beach to Sandringham on Dec. 19 1926

Windsor yard abolished June 1979, signalbox abolished June 1983 after Union St gates changed to boom barriers.

Dendy St yard and signalbox abolished 1986

Sandringham reduced to 4 roads in1988 a/c introduction of Comeng trains on Sandringham line.