Digital Train Radio System Como Site Review of Environmental ...

Other infrastructure options were considered, but were not feasible for the proposal.
• The proposed monopole is less obtrusive, requires less space and is cheaper to maintain
than a lattice tower or guyed mast. The proposed monopole also uses a foundation design
that is better suited given the spatial limitations within the rail corridor. The monopole is
thinner at the top and less obtrusive than a lattice tower helping to minimise the visual
impacts of the proposal.
• The monopole can be installed using a hinge mechanism, which removes the need for
large cranes.
• The installation of a walk-in equipment hut will use more space and is more expensive. The
use of outdoor cabinets was the most suitable solution given the limited space, cost and
minimisation of environmental impacts.
3.6 Justification of the Preferred Option
Overall this work, as part of the DTRS project, will result in significant benefits by providing a
more effective communications systems for the RailCorp network. The system is in use around
the world and allows for continuous communications coverage, the capacity to make
simultaneous calls and greatly improved emergency calling capabilities. Once active, the DTRS
will provide a more effective communications system that will assist in the safe and efficient
operation of RailCorp’s electrified rail network
The proposal for a BTS at Como, 800 metres north of Como railway station was selected
because it will enable the site to be consistent with the whole RailCorp DTRS network.
Consistent technology choice will enable RailCorp to improve its existing quality of service,
reliability and emergency responsiveness. The reasons for selecting the technology are
discussed above.
The Como site was selected due to its ability to cover the section of track between Oatley and
Jannali. The proposed antenna height (i.e. approximately 25 metres) is the minimum height
required to provide optimum radio frequency coverage in these sections of track.
The proposed site is also close to existing fibre and power supplies and has good construction
and maintenance access. The proposal will not require the removal of large amounts of
vegetation and there is an adequate buffer distance (at least 100 metres) to the nearest
residential receivers.
Due to the need to provide RF coverage to the tracks on both sides of the Georges River, the
site had to be close to the bridge across the river. There were no sites on the northern side of
the river that provided adequate access for construction, hence the site is on the southern side.
The site selected provides the best access with minimal visual impact to local residences.