The ARTC Code of Practice, with respect to Flooding, 'ETG-10-01', does not specify hydrological design parameters, including height of water ponding against the formation layer for a design precipitation event, and this could lead to under specified track drainage arrangements and an increased risk of track damage arising from flash flood events.
Safety Advisory Notice
The Australian Transport Safety Bureau advises that the Australian Rail Track Corporation should consider the implications of this safety issue and take action where considered appropriate.