Appendix D. Traffic Report

                                                                     Proposed Service Station, 175 Eumundi Noosa Road, Noosaville




period rate. For this assessment, an assumption has been made that the AM peak period rate is 50% of the PM
peak period rate.

Trip Segmentation

It is well accepted that a high proportion of trips generated by a service station are ‘drop-in’ trips. ‘Drop-in’
trips are also referred to as ‘pass by’ trips (the proposed development is an intermediate stop on a trip that is
made from an origin to a destination).

This traffic impact assessment is based on 90% of trips generated by the service station are designated as ‘drop-
in’ trips (10% of trips are ‘new’ or ‘primary’ trips). The ‘new’ trips, ‘drop-in’ trips and ‘total’ trips expected to be
generated by the proposed service station during the road peak hour periods are summarised in Table 4-2.

Table 4-2: Development Generation during the Road Peak Hour Periods

                                                  Weekday AM (vph)                            Weekday PM (vph)
     Type of Land
                           Units
         Use
                                          Total         New          Drop-in         Total            New           Drop-in

    Service Station
          with
                        223m2 GFA           74           8             66             148              15              133
     Convenience
          Store


The trip directional distributions have been assumed to be 50% IN / 50% OUT during the peak hour periods.

Due to the ‘left-in, left-out’ site access arrangement, it is anticipated that most of the ‘drop-in’ trips are from
Eumundi Noosa Road westbound traffic. The service station is relatively small (no fast food outlet), therefore
minimal ‘drop-in’ trips are anticipated from eastbound traffic.

Considering this, the following percentages for the distribution of ‘new’ trips have been adopted in the
assessment:

 Eumundi Noosa Road (to / from the west)                         50%; and

 Eumundi Noosa Road (to / from the east)                         50%.
The anticipated ‘new’, ‘drop-in’ and ‘total’ traffic generations of the development are shown in MRCagney
Figures C5 to C7 within Appendix C.

4.4            Impact on External Road Network
Part B - Chapter 6 of DTMR’s Guide to Traffic Impact Assessment6 states that an assessment of the impacts on
intersection delay should be conducted for:

          “All intersections where the development traffic exceeds 5% of the base traffic for any movement in the
          design peak periods in the year of opening of each stage.”



6
    “Guide to Traffic Impact Assessment”, DTMR.




                                                              9