Filling a gap in rail data: an investigation of the Gheringhap Loop train sightings

This paper analyses train sightings data collected at Gheringhap, Victoria, located on the Melbourne to Adelaide main line. These sightings provide an independent source of information on train movements, train lengths, and reliability, and, given knowledge of freight volumes, can be used to estimate average wagon loads. In cases where trains are not scheduled, sightings such as these are presently the only publicly available source of data for freight volumes on specific routes.