Further Advice Response 17-07-25 22BRT0122_LT01_3 · OPW25/0042

Table 3-1: Summary of Sidra Outputs (Weyba Road / Mary Street / Reed Street Roundabout)
 Scenario         DOS      Average Delay                          LOS               95th Percentile Critical Queue (m)

                            Overall         Worst Movement        Overall   Worst    Reed St    Weyba     Weyba      Mary
                                                                            Mvmt       (E)      Rd (SE)   Rd (N)     St (W)
 Weekday - AM Peak Hour

 2022 Survey      58%         9 sec      18 sec (UT Weyba Rd N)     A         B       31 m       29 m      29 m          6m
 2025 Base        61%        10 sec      20 sec (UT Weyba Rd N)     A         B       36 m       31 m      35 m          51 m
 2025 Base +      62%        10 sec      20 sec (UT Weyba Rd N)     A         B       38 m       31 m      36 m          52 m
 Earthworks
 Weekday - PM Peak Hour

 2022 Survey      66%        11 sec      25 sec (UT Weyba Rd N)     A         B       42 m       36 m      53 m          59 m
 2025 Base        71%        13 sec      29 sec (UT Weyba Rd N)     A         B       49 m       41 m      64 m          69 m
 2025 Base +      72%        13 sec      29 sec (UT Weyba Rd N)     A         B       51 m       41 m      66 m          72 m
 Earthworks
 Weekend – PM Peak
 2022 Survey      57%         9 sec      17 sec (UT Weyba Rd N)     A         B       34 m       24 m      24 m          43 m
 2025 Base        61%        10 sec      18 sec (UT Weyba Rd N)     A         B       40 m       25 m      28 m          51 m
 2025 Base +      61%        10 sec      18 sec (UT Weyba Rd N)     A         B       41 m       26 m      28 m          52 m
 Earthworks
RT – Right Turn Movement, Th – Through Movement, LT – Left Turn Movement, UT – U Turn Movement; N – North, S – South, E –
East, W – West

The analysis indicates that the roundabout is expected to operate at suitable levels at the during the 2025
assessment year, with earthworks traffic included, with a worst-case DoS 72% (less than 85% - practical
capacity limit of roundabout) and overall LoS A. The addition of the Bulk Earthworks traffic has no notable
impact to key operational metrics, with negligible change to average intersection delay and at most an
increase in queuing of up to 3 m (less than one vehicle length – approx. 6.0m).

Based on this SIDRA capacity assessment, the proposed Bulk Earthworks traffic generation is considered to
have negligible impact on the operations of the Weyba Road / Mary Street / Reed Street roundabout
intersection.

          Analysis of Noosa Drive / Coral Tree Avenue

Figure 3-2 overleaf shows the configuration of the Noosa Drive / Coral Tree Avenue roundabout intersection
adopted in the SIDRA analysis. All default SIDRA inputs were used for the analysis.




Site: 3-7 Serenity Close, Noosa – Proposed Resort Complex
Reference: 22BRT0122