Attachment 4- Traffic Impact Assessment

                                                                                                             21 November 2023
                                                                                                    SLR Project No.: 620.V30926
Stockwell Development Group Pty Ltd                                                  SLR Ref No.: 620.V30926-R01 VMU TIA v1.0
Noosa Village Mixed Use Development                                                                              20231121.docx


Table 28 Critical Delay Thresholds
                    LOS                                       Description                        Critical Delay (sec/vehicle)[1]
                      A                                     Good operation                                      < 14 sec
                                                   Acceptable delays and spare
                      B                                                                                        15 - 28 sec
                                                            capacity
                      C                                        Satisfactory                                    29 - 42 sec
                      D                                      Near capacity                                     43 - 56 sec
                                                    At capacity, requires other
                      E                                                                                        57 - 70 sec
                                                          control mode
[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.


9.4            Assessment Scenario
9.4.1          Assumptions
For the purpose of the traffic assessment conducted herein, the year of opening of the
proposed development has been assumed to be 2026. A 10-year design horizon of 2036 has
therefore been adopted.
Importantly, Stockwell has advised that it is unlikely that the balance land throughout the
Noosa Business Centre will have been developed within the 2036 design horizon. For the
purposes of this assessment, the analysis has assumed that the Noosa Business Centre is
fully developed in order to demonstrate that the key internal intersections will operate
satisfactorily in this circumstance.

9.4.2          Assessment Scenarios
The operational performance of the impact road network has been considered for the following
assessment scenarios:
          2023 ‘Baseline’: to establish existing operational conditions. Using the intersection
           survey data obtained from May 2022 as a base, applies a growth factor to through
           movements along Hofmann Drive and includes conservative estimates of traffic
           volumes for I4 and I5 (in the absence of intersection survey data) to create a present
           day baseline.
          2026 ‘Baseline’: to establish the operational performance of the road network in the
           absence of the development at the year of opening. Includes further growth for
           Hofmann Drive plus the addition of surrounding developments that’s anticipated to be
           opened by this year.
          2026 ‘Baseline with Development’: to identify the impact of the traffic generated by the
           development at the year of opening.
          2036 ‘Baseline’: to establish the operational performance of the road network in the
           absence of the development at the 10-year design horizon. Includes further growth for
           along Hofmann Drive plus includes additional surrounding development that’s
           anticipated to be opened by this year.
          2036 ‘Baseline with Development’: to identify the impact of the traffic generated by the
           development at the 10-year design horizon.




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