Sugar railways

From what i understand sugar railways are just like normal railways but for sugar. they were made to transport the sugar quicker to the mill. Most are in Queens land because the large quantity of sugar made in Australia is in Queensland.
Australia has the most advanced sugar railways in the world.-
Along the coast of Brisbane to the north of Cairns you would find
- 4000 km of sugar train track
- 250 diesel hydraulic locomotives, weighing between 15 and 40 tonnes each