MCU14/0106 Appendix D - Traffic Impact Assessment

                                                                                                Traffic Impact Assessment
                                                                                                   Noosa Civic Expansion



The split of development traffic using each access has been based upon the parking available at each
access of the expansion. The proposed expansion plans include 310 parking spaces at ground level and
690 parking spaces in undercroft parking. Table 4-4 outlines the assumed parking allocation between the
proposed access roads located along the internal road network.
Table 4-4       Access Usage Split
Internal Access Road                            Parking Space Allocation                  Parking Distribution
Northern At-Grade Access                                120 spaces                                12%
Eastern At-Grade Access                                  90 spaces                                10%
Eastern Undercroft Access                               414 spaces                                40%
Southern At-Grade Access                                100 spaces                                10%
Southern Undercroft Access                              276 spaces                                28%

4.2.2           Pass-By Trips
The development traffic has been considered as the following three different types of trips:
   >         New Trips
   >         Diverted Trips
   >         Pass-By (Drop-In) Trips.
The Department of Transport and Main Roads’ “Preconstruction Processes Manual” (PPM) outlines the
proportion of these trips for shopping centres and has been referenced in Table 4-5 for this analysis of traffic
distribution. As the proposed expansion size will be greater than 35,000sq.m, a factor of 0.80 has been
applied to the proportion of Drop-In and Diverted Trips in accordance with the PPM.

Table 4-5       Proportion of Generated Trips
                                                                        Proportion of Trips
Trip Type
                                                 Thursday PM Peak Hour                   Saturday Am Peak Hour
New Trip                                                    60%                                   74%
Diverted Trip                                               24%                                   16%
Drop-In (Pass-By) Trip                                      16%                                   10%
Source: Adapted from Table 2A.7 and Table 2A.8, Preconstruction Processes Manual, TMR

Walter Hay Drive has been considered to be the road most affected by pass-by trips as it travels parallel to
the proposed internal road network, connected to the network via the Northern Access and Southern Access.
Considering the aforementioned retail distribution of the external road network, the proportion of pass-by
trips has been calculated in Table 4-6. The southbound traffic on Walter Hay Drive is considered to
accumulate from Eumundi Road and Eenie Creek Road, which respectively represent 20% and 33% of the
traffic distribution. The northbound traffic on Walter Hay Drive represents 18% of the traffic distribution. The
trip distribution has been illustrated in Figure 4-6.

Table 4-6       Proportion of Generated Trips
Direction                                     Directional Retail Distribution            Drop-In Trip Proportion
Walter Hay Drive – Southbound                       20% + 33% = 53%                     53% / (53% + 18%) = 75%
Walter Hay Drive – Northbound                               18%                         18% / (53% + 18%) = 25%




J13041                                                     Cardno                                        December 2014
Prepared for QIC Noosa Civic Pty Ltd                                                                          Page 16