F - Traffic Response and Revised Traffic Impact Assessment (17.09.19)

20 Hofmann Drive, Noosaville | Traffic Impact Assessment

The assessed Degree of Saturation (DOS) is expected to be exceeded for a roundabout intersection for
the assessed 2030 Background and Background with Development assessments (10 year design
horizon). This indicates that capacity improvements might be required due to background traffic growth
sometime in the future regardless of the development. It is noted that while the degree of saturation
criteria might exceed typical limits the expected average critical delay remains within allowable limits for
a roundabout intersection.

The adopted traffic impact assessment of the proposed development is also considered to be
conservative as it has not considered the future extension of Hoffmann Drive through to the Walter Hay
Drive roundabout. That is the traffic impact assessment might show increased development impact on
the assessed intersections. The inclusion of the connections to Walter Hay Drive and the connection
through the Noosa Civic Precinct would redistribute the traffic across additional intersections lessening
the overall impact of the development on the adjacent road network.

The existing intersection configuration is considered appropriate to accommodate the existing and
proposed development traffic at the year of opening, without resulting in significant impacts to
intersection delays.

Noosa Shire Council (Council) has identified road corridor works for Eenie Creek Road in the Council
Local Government Infrastructure Plan (LGIP) these outlined works are designated as R10 (Schedule 9.1
Table 15.16). The identified road corridor upgrade works are scheduled to occur between 2021 – 2026,
before the Eenie Creek Road / Walter Hay Road intersection reaches its expected design capacity.

The details off the Council budgeted works are not known at this stage, but the notes associated with
the listed works make it clear the upgrades are to improve vehicle capacity at this intersection. The
proposed development would be making a financial contribution to such works through the payment of
infrastructure charges.




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