Between May 1974 and January 1975, ACTION received 20 AEC Swift 3MP2R buses with body by Smithfield Bus and Coach Works of Sydney.
These buses would be the last batch of Swifts purchased by ACTION. A total of 101 Swifts were purchased with 14 bodied by Athol Hedges (1967-69), 30 by CVI (1970-71) and 37 by Freighter (1971-73). This represents the largest fleet of AEC Swifts (with the AH505 engine) outside of London.
The Smithfield-bodied AEC Swifts were allocated the following fleet numbers: 229, 232-225, 252-255, 326-336
These buses were withdrawn from service between 1982 and 1984, giving them the shortest working life of any class of bus ordered by the Canberra Bus Service.
- Engine: AEC AH505
- Swept Volume: 8.2 litres
- Power: 111 kW (149 hp)
- Transmission: Wilson SCG four-speed semi-automatic
- Wheelbase: 5.64m
- Length: 11.1m