MCU16/0079 Appendix E - Traffic Impact Assessment

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


5.4         DESIGN TRAFFIC VOLUMES
            Design traffic volumes have been derived by adding estimated development trips to background traffic
            forecasts for both the ‘year of opening’ (assumed to be 2018) and the 10-year design horizon (2028). The
            estimated future design volumes are included at Appendix H.

5.5         INTERSECTION ANALYSIS
            The adopted layout for the Memorial Avenue/Doonella Street roundabout is illustrated on Figure 5.1. The
            assessment results are summarised in Table 5.3. Detailed SIDRA outputs are provided at Appendix I.




            Figure 5.1:           SIDRA Layout – Intersection of Memorial Avenue/Doonella Street
            Table 5.3:            SIDRA Results – Intersection of Memorial Avenue/Doonella Street
                                                                                Average Delay   95th %ile Queue    Acceptable
                 Scenario             Demand (vehs/hr)            DOS (%)
                                                                                   (secs)             (m)         Performance
                                                                    AM Road Network Peak
              2016 Baseline                1,807                    71                8               54             Yes
                 2018 BG                   1,841                    73                8               57             Yes
                 2028 BG                   2,024                    81                9               88             Yes
             2018 BG + DEV                 1,851                    73                8               59             Yes
             2028 BG + DEV                 2,034                    82                9               93             Yes
                                                                    AM Road Network Peak
              2016 Baseline                1,705                    65                7               51             Yes
                 2018 BG                   1,739                    66                7               53             Yes
                 2028 BG                   1,910                    73                8               68             Yes
             2018 BG + DEV                 1,757                    67                7               55             Yes
             2028 BG + DEV                 1,928                    74                7               71             Yes

            The results suggest that the intersection will operate within the acceptable performance thresholds for a
            roundabout (i.e. (DOS < 85%) in all assessed scenarios. Therefore, no upgrades are warranted.



 Project No: P2623                                 Version: 002                                                                 Page 11