10. APP E. Traffic Impact Assessment Report

 

PEKOL TRAFFIC & TRANSPORT

4.4

Intersection Performance

The likely impact of the proposed development on the future year (2017 and 2027) peak hour operations
on the surrounding road network has been assessed using SIDRA. These analyses are based on the peak
hour scenario turning movement forecasts for the existing operations and assumed turning proportions

for the post-development scenarios, which are presented in Appendix D.

4.4.1 Eumundi Road / Walter Hay Drive / Venture Drive Roundabout

The SIDRA analyses performed to quantify the existing and future year (ie 2017 and 2027) peak hour
operations of this intersection was undertaken using the layout shown in Figure 2.2. The results are

summarised in Table 4.5 and presented in Appendix C.

Table 4.5: EUMUNDI ROAD / WALTER HAY DRIVE / VENTURE DRIVE ROUNDABOUT
Evening Peak
2014 Existing 52% 4.0 Eumundi Road (South) — All Movements
2017 Pre Development 54% 42 Eumundi Road (South) — All Movements
2017 Post Development 55% 43 Eumundi Road (South) — All Movements
2027 Pre Development 65% 5.6 Ventura Drive — All Movements
2027 Post Development 66% 5.8 Ventura Drive — All Movements
Saturday Peak
2014 Existing 48% 3.0 Eumundi Road (South) - All Movements
2017 Pre Development 50% 3.1 Eumundi Road (South) - All Movements
2017 Post Development 51% 3.3 Eumundi Road (South) — All Movements
2027 Pre Development 56% 41 Eumundi Road (South) — All Movements
2027 Post Development 58% 43 Eumundi Road (South) — All Movements

The results predict that the Eumundi Road / Walter Hay Drive / Venture Drive roundabout will operate
at an ‘excellent’ level of service during all of the 2017 and 2027 evening and Saturday peak hour scenarios.
The additional traffic associated with the proposed development is not expected to significantly increase
the critical degree of saturation. All of the scenarios assessed are within the DTMR acceptable limits for

roundabouts.

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