Railway crossing in the desert of Australia

This is a photo of a railway crossing on the train line that runs up the centre of Australia between Adelaide and Darwin. The train line crosses the desert in South Australia and the Northern Territory in Australia. This photo was taken in the South Australian desert, somewhere between Glendambo and Coober Pedy. The signage was a surprise to see becasue there isn't much traffic, or regular trains, in the Australian outback.