Appendix E- Traffic Impact Statement · MCU23/0078

 Stockwell Development Group Pty Ltd                                                              SLR Ref No: 620.30926-R01-v1.0 TIA 20230524.docx
 Traffic Impact Assessment                                                                                                               May 2023
 Proposed Noosa Civic Village Mixed Use Development




8.8.2       Critical Delay

The RMS (now TfNSW) Guide to Traffic Generating Developments (2002) recommends that the average delay
statistic for the critical movement provides a better indication of intersection performance and safety for
roundabouts and priority-controlled intersections than DOS. A summary of the delay thresholds recommended
by TfNSW is provided in Table 14.

Table 14 Critical Delay Thresholds
 LOS                   Description                                                                        Critical Delay (sec/vehicle)[1]
 A                     Good operation                                                                                   < 14 sec
 B                     Acceptable delays and spare capacity                                                           15 - 28 sec
 C                     Satisfactory                                                                                   29 - 42 sec
 D                     Near capacity                                                                                  43 - 56 sec
 E                     At capacity, requires other control mode                                                       57 - 70 sec
[1] For traffic signals, the average delay of all movements should be reported. For roundabouts and priority-control intersections, the highest average
delay of the critical movement should be reported.


8.9         Intersection Assessment
8.9.1       I1 - Hofmann Dr / Noosa Civic Access Rd Roundabout

The Hofmann Dr / Noosa Civic Access Rd Roundabout is an existing three-leg roundabout. The existing
intersection form is shown in Figure 13. Summary output from the SIDRA assessment is presented in Table 15,
with detailed output provided at Appendix E.

Figure 13 Hofmann Dr / Noosa Civic Access Rd Roundabout Form




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