Minor Change Attachment 3 Traffic Engineering Advice

The peak hour trip generation of the Previous Approval is summarised in Table 5.

Table 5 Previous Approval (MCU12/0051M) Development Trips
                                                        Saturday Noon                                                                   Thursday PM
             Land Use                 Yield (GFA)
                                                          Peak Hour                                                                      Peak Hour
                                               2
    Home Improvement Store             9,822m                750                                                                            339
          Retail Business (Type 4)                                        1,737m2                                       70                    44
                                                                                        2
                         Total                                           11,559m                                        820                  383

The peak hour trip generation of the Proposed Development is summarised in Table 6.

Table 6 Proposed Development Total Trips
                                                                                                           Saturday Noon                Thursday PM
                      Land Use                                          Yield (GLA)                          Peak Hour                   Peak Hour
                                                                                                             Total Trips                 Total Trips
Retail Business (Type 4) Showroom                                         7,845m2                               314                         196
      Entertainment (Type 2)
                                                                          1,380m2                                       124                  124
 Recreation, amusement & fitness
        Industrial Business
              (Type 2)                                                      900m2                                       4.7                    5
 Business Park and Industrial Uses
       Commercial Business
                                                                          1,920m2                                        -                    23
           (Type 1 Office)
Entertainment and Dining Business
    (Type 1) Food & Beverage                                                216m2                                       11                    11
         Café / Restaurant
                Total                                                    12,261m2                                       453                  359

Based on the adopted trip generation rates, the proposed Retail Business (Type 4) development is
expected to generate in the order of 453 trips (in and out) during the Saturday noon peak period.

It is important to note, however, that not all trips associated with the development will be ‘new’ to the
local road network. As the retail portion of the development is expected to be convenience based, a
proportion of trips associated with this site will be drop-in trips. That is, some trips to and from the
development will be motorists travelling past or in close proximity to the development as part of
another trip (e.g. travelling home from work).

DTMR’s Guide to Assessment of Road Impacts of Development (GARID) Appendix F provides guidance in
relation to the proportion of new and ‘drop-in’ trips. The trip segmentation outlined in the GARID for
the proposed land use is summarised in Table 7.

Table 7 Adopted Trip Segmentation – GARID
                            Use                                              New                      Diverted Drop-in              Undiverted Drop-in
               Retail
                                                                             50%                                 22%                        28%
  Shopping Centre 3,000 – 20,000m2


Table 8 summarises the estimated segmented development traffic generation during each peak period.




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