Public Transport Victoria, Victoria Australia
GT delivers ‘single point of truth’ asset information for the entire Victorian rail network
The Victorian rail network, with over 6,500 kilometres of electrified and non-electrified track, is one of the largest rail networks in Australia.
Public Transport Victoria (formerly Department of Transport) or PTV is the statutory authority responsible for coordinating and monitoring public transport services in Victoria and undertakes the contract management of transport operators that are responsible for the delivery of public transport and freight services.
With PTV’s information on assets contained in spreadsheets and archaic document management systems, it was difficult for engineers and transportation planners to get accurate up-to-date information on what assets were present and what condition they were in. It had become clear that a ‘single point of truth’ for asset information was urgently needed. This was particularly important in order for the government to monitor train franchisee asset maintenance performance.
Obtaining this information by manual surveying methods would prove to be very time consuming and another solution had to be found. PTV asked Geomatic Technologies (GT) to help.
GT undertook a state-wide asset survey using GT’s Asset Inspection Mapping System (GT AIMS). GT AIMS facilitates the capture of digital track-based imagery at 2.5 metre intervals from rail vehicles. Assets are then recorded or mapped through a photogrammetric software application and attributes such as location, asset type and condition are logged in an asset database.
The core project requirement was to map all track centrelines, track geometry and rail assets throughout Victoria’s urban and rural rail network.
Those assets that were not visible from the drivers-view track imagery were surveyed using a combination of site visits and high-resolution aerial photography.
To compliment the trackside asset survey GT was also required to visit each of the Victoria’s 600+ active train stations in order to complete an inventory of the buildings and supporting infrastructure that was located within the rail easement.
The project was completed by GT staff with a mix of surveying, photogrammetry, IT and GIS or Geographic Information System backgrounds.
Features included in the survey were broken into three categories:
– Discreet or point objects (e.g. Signals, Signs, Portals, Masts).
– Line features (e.g. the track alignment and traction power wiring system).
– Polygon features such as the protection and surface through all level crossings, station buildings and bridges.
– Engineers and planners now have a ‘single point of truth’ for asset information.
– Asset information is accurate and upto- date.
– Infrastructure changes are managed against a correct baseline of asset information to ensure data currency.
– Asset information is available to users through a spatial web application, improving speed of access to critical asset information.