Geomatic Technologies completes State-wide Rail Asset Survey
Melbourne, Australia 2007 – Geomatic
Technologies (GT), has successfully
completed the survey of all rail track
infrastructure throughout Victoria.
Comprised of over 5,000 miles of
electrified and non-electrified track the
Victorian network is one of the largest in
Australia.
The core project requirement was to map
all track centrelines, track geometry and rail
assets throughout Victoria’s urban and rural
rail network. In addition to recording
physical details (asset type, construction
etc) about each asset critical to the
performance of the public transport &
freight systems, a coordinate for each asset
was also captured and digital imagery at a
frame interval of 2.5m was recorded over
the entire rail network.
The project was commissioned by the
Victorian State Government and was
completed by GT staff with a variety of
Surveying, Photogrammetry, IT and
Geographic Information System
backgrounds.
Digital track based imagery recorded from
locomotive and hy-rail vehicles was used
within GT’s AIMS photogrammetric
mapping application as the source material
for coordinating and attributing track side
assets. Those assets that were not visible
from the drivers-view track imagery were
surveyed using a combination of in-field
visits & high resolution aerial photography.
To compliment the trackside asset survey
GT were also required to visit each and
every one 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 property
easement. Features included in the survey
were broken into three categories;
- Discreet or point objects (for example
Signals, Signs, Portals, Masts),
- Line features (for example the track
alignment and traction power wiring
system),
- Polygon features such as the
protection and surface through all
level crossings, station buildings and
bridges.
The Victorian Rail Infrastructure Survey has
delivered network-wide asset data through
a spatial application to an industry that was
reliant on spreadsheets and archaic
document management systems. The
Department of Infrastructure have
developed an online spatial information
website (PASS Assets) to publish the data
and the take-up of PASS Assets user
licences (now 500+) is an endorsement of
both the DOI’s initiative to conduct the
asset survey and the need for accurate rail
infrastructure data by engineers and public
transport planners alike.
GT AIMS software utilizing hy-rail & aerial imagery and photogrammetric coordination techniques.
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