The licence for a motorbus service within the Dalby township was granted by the State Transport Commission in May 1945.
In October 1945, the Commission called for tenders for a service to operate within the town, however the Commission was doubtful that the service would be a profitable venture for a licensee.
In February 1946, the tender from Sproxton Bros. of Gympie was accepted, and they arrived in Dalby with a vehicle recently renovated and ready for work. The bus was brought from Gympie via Kingaroy and Bell.
The proprietors arranged to run three bus routes, making several trip each day and serving every quarter of the town. The bus stand in Dalby was located on the corner of the Commonwealth Bank, and along with the three regular routes, the service covered trips to Sunday church services, the hospital, the cemetery, and the pictures on Wednesday and Saturday nights.
By June 1947, the bus service was travelling 65 miles a day around the town, but fares were not covering expenses, so Sproxton Bros. applied to the Commissioner for Transport to increase the fares. Dalby Town Council supported this application, and recommended that users pay an increased fare, rather than Council subsidising the proprietor to keep the bus service running, which would be a cost to all ratepayers.
It is not known when the Dalby bus service ceased operations.
