The four-car vintage suburban electric train set W3 was the first production train to feature power-operated “safety doors”, and the first set to use double-deck carriages in Sydney.

One of the double-deck carriages in set W3, T4801, was the very first double-deck car to enter service on 1st March 1964. These innovative cars were of lightweight aluminium construction on steel underframes with air-ride bogies for better riding qualities. Car T4814 represents the balance of the 120 double-deck carriages built at Tulloch Limited of Rhodes between 1964 and 1968.

The two single-deck carriages in set W3 were built at Commonwealth Engineering near Granville in 1958. They were the final development of the singledeck suburban electric cars, with all-welded steel construction and four traction motors per car. They were known as “Sputnik” cars as their introduction coincided with the launch of the satellite by that name.