The Brisbane City Council operated 36 Sunbeam trolleybuses on a 28 kilometre network.

In 1948, the Brisbane City Council municipalized 20 privately run bus operators and expanded its own fleet of buses.

The first tram lines to close were the Lower Edward Street to Gardens route, and the Upper Edward Street to Gregory Terrace route in 1947, the latter due to the very steep grades on that line.

The network reached its peak of 28 kilometres on 19 June 1960 when the Carina route was extended.

The fleet comprised 36 Sunbeam MF2B trolleybuses; 30 bodied locally by Charles Hope in 1951/52 and six by Athol Hedges in 1959.