MCU16/0079 Appendix E - Traffic Impact Assessment

Tewantin Noosa RSL – Stage 4, 5 & 6
Traffic Impact Assessment



5.             EXTERNAL TRAFFIC ANALYSIS
5.1            BACKGROUND TRAFFIC VOLUMES
               A turning movement survey was undertaken at the Memorial Avenue/Doonella Street roundabout during
               the following periods to establish existing traffic demands at this location:
                 Friday 17th June 2016 - AM Peak: 3hrs (6:30am to 9:30am); and
                 Friday 17th June 2016 - PM Peak: 3hrs (3:30pm to 6:30pm).
               A copy of the survey data is included at Appendix G.
               In order to account for background traffic growth in the area surrounding the site, a growth rate of 1%p.a.
               was applied to all surveyed turning movements. This is considered to be relatively conservative, given the
               limited growth potential in Noosa-Tewantin.

5.2            DEVELOPMENT TRAFFIC VOLUMES
               The turning movement survey indicates that the surrounding road network peaks at the following times:
                 AM Road Network Peak = 8:00am to 9:00am; and
                 PM Road Network Peak = 4:00pm to 5:00pm.
               Based on detailed parking occupancy data, it is clear that the existing RSL peak does not coincide with the
               adjacent road network peak. Whilst we did not specifically survey traffic movements generated by the RSL,
               we are of the view that this could be derived from the parking occupancy data.
               As highlighted in Table 5.1 below, we have estimated that the existing RSL may generate in the order of 20
               vehicle movements in the AM road network peak and 46 vehicle movements in the PM road network peak.
               Apply the corresponding trip rate to the proposed expansion, we have estimated a potential net increase of
               10 vehicle movements in the AM road network peak and 20 vehicle movements in the PM road network.
               Table 5.1:           Development Traffic Generation
                                                                                                                      Net
               Road        Off-Street Parking                               Existing           Approximate                            Potential Net
                                                   Assumption                                                      Increase
               Peaks            Demand                                       TUA                Trip Rate                           Increase in Trips
                                                                                                                    in TUA
                            20 cars at 8:00am     20 vehicles IN                                                                        10 trips
                AM                                                     1,957.84m²         1 trip/100m² TUA         940.27m²
                           & 40 cars at 9:00am   & 0 vehicles OUT                                                                      (100% IN)
                            60 cars at 4:00pm      26 vehicles IN                                                                     19 trips
                PM                                                     1,957.84m²        2 trips/100m² TUA         940.27m²
                           & 66 cars at 5:00pm   & 20 vehicles OUT                                                              (55% IN / 45% OUT)

               This scale of traffic demand is typically considered to be minor from a traffic engineering perspective and in
               our view would have negligible impacts on the surrounding road network.

5.3            DEVELOPMENT TRAFFIC DISTRIBUTION
               As highlighted in Table 5.2 below, we have adopted distribution assumptions based on approach volumes
               surveyed at the Memorial Drive/Doonella Road roundabout during each peak. We have conservatively
               assumed that all new traffic generated by the expansion will be to/from either the west or south.
               Table 5.2:           Development Traffic Distribution
                                                                     AM Peak                                             PM Peak
               Approach           Direction         Survey       Adopted               Estimated        Survey           Adopted           Estimated
                                                   Demands      Distribution             Trips         Demands          Distribution         Trips
                Doonella        Eastbound (IN)        891             58%                 6                  575              21%               4
                 Street
                 (West)       Westbound (OUT)         532               -                  -                 745              24%               5

               Memorial        Northbound (IN)        659             42%                 4                  912              34%               6
               Avenue
                (South)       Southbound (OUT)        990               -                  -                 659              21%               4


     Project No: P2623                           Version: 002                                                                                           Page 10