Traffic Engineering Report

6.             Estimated Future Transport Demands
6.1.           Future Traffic Volume Inputs
To estimate future traffic demands, TTM have made several estimations regarding:

          Growth rates;
          Base traffic volumes;
          Opening day;
          Holts Road Industrial Estate traffic generation;
          Development traffic volumes;
          Traffic distributions; and
          Heavy vehicle percentages.

6.1.1.         Growth Rates
The AADT forecasts provided by DTMR identify annual growth rates for the northbound on and
off ramp of the Bruce Highway and Myall Street varying between 1.7% and 2.9% in the ‘Do
Nothing’ and ‘Upgrade’ options. TTM have applied the higher growth rate of 2.9% p.a. to
determine future traffic volumes on Myall Street. This growth rate is also applied to determine
opening day traffic volumes.

6.1.2.         Base Traffic Volumes
TTM have used through volumes on Myall Street at Holts Road as base volumes to determine
future traffic volumes. This will result in a robust assessment as the AADT projections provided
by DTMR indicate that traffic volumes on Myall Street at Holts Road will reduce with the
upgraded interchange.

6.1.3.         Design Years
It is estimated that the approval and construction time frame would vary between 2 and 3
years. TTM have therefore assessed the development impact based on a 2019 opening year. As
such, the 10 year design horizon would be 2029.

6.1.4.         Holts Road Industrial Estate Traffic
Given the proximity to the Bruce Highway, the Holts Road Industrial Estate is predicted to
comprise warehouse type uses rather than manufacturing. As noted in Section 3.2, TTM are
not aware of development applications or approvals over any lot in this estate. As such
applicants for other lots within this estate will be required to undertake their own traffic
assessments for their intended development application. Applying traffic from this estate is
intended to provide an informed assessment of the impact of the development proposal on
the Holts Road intersections with Myall Street and Taylor Court only. This analysis is not
intended to provide a detailed assessment of the impact of other lots outside the subject site.




Site: Lot 3 Taylor Court, Cooroy                                                             14
Reference: 16BRT0201