Traffic response · MCU18/0019

            environment and local traffic conditions, and consistent with the access arrangements to
            existing properties on Goodchap Street in the vicinity of the development site.

       •    Whilst two vehicle crossovers are proposed onto Goodchap Street, the access arrangement
            involves an entry only driveway, and an exit only driveway, i.e. a single (separated) access,
            providing the opportunity for pedestrians to cross the driveways in a staged manner.
       •    Given the vertical and horizontal alignment of Goodchap Street in the vicinity of the proposed
            access driveways, sight distance to/from the access driveways would be essentially unrestricted.
            Furthermore, given northbound traffic on Goodchap Street is approaching the Val Crescent
            roundabout, this traffic would be decelerating, and therefore likely to be travelling at a speed
            substantially lower than the posted speed of 60km/hr. Accordingly, the impact of turning traffic
            upon through traffic on Goodchap Street would be further reduced, i.e. marginal.
Notwithstanding the above, in order to further reduce any impact upon through traffic on Goodchap Street,
and should Council deem it necessary, the access driveways to the porte cochere could be limited to left-in
and left-out traffic movements only. These movement restrictions could be enforced by way of appropriate
crossover geometry, signage, and/or a central median on Goodchap Street, which would physically prevent
the right turn movement into the entry driveway, and the right turn movement from the exit driveway. This
could be addressed by way of a condition of the approval, at detailed design stage.
As discussed in the Traffic Report which accompanied the development application, in order to
accommodate the access driveways for the porte cochere, the applicant proposes to reposition the bus stop
along the site frontage approximately 40m to the south of its current location, as shown in the diagram
included as Attachment 2. The proposed (repositioned) bus stop would still be located along the frontage
of the subject site, but adjacent to its southern boundary (in front of the residence which is currently at 62
Goodchap Street) rather than midway along the frontage. In the proposed location, the bus stop would not
impede property access, nor would it have a notable impact upon on-street parking, requiring the removal of
only one kerbside parking space.
The proposed relocation of the bus stop is addressed in response to the DSDMIP’s information request, in
the following sections of this report.
Overall, the proposed access driveways on Goodchap Street, which will provide access to the porte cochere
for low volumes of traffic only, are considered to be supportable given the road environment and local
traffic conditions, and consistent with the access arrangements to existing properties on Goodchap Street in
the vicinity of the development site.
Issue – Val Crescent sight lines
The proposal demonstrates sight lines from the proposed Val Crescent driveway toward the roundabout,
and shows that a sight line triangle across part of the site is required to satisfy absolute minimum
driveway sight line requirements. This satisfies the lesser Australian Standard requirement for driveway
sight lines, but does not satisfy the more desirable Austroads Safe Intersection Sight Distance (SISD)
requirements.
Sight lines are restricted in both directions when departing from the driveway, and exacerbated even
further by the fact that the driver of the vehicle departing from the driveway also needs to look across an
angle greater than 90 degrees from the straight ahead in each direction.
Considering the above discussion, it is recommended that a more appropriate driveway location from a
traffic safety perspective be investigated at a location further south along Val Crescent, about at the
slight bend in Val Crescent half way along the long frontage.
Staff vehicle movements
No staff shift times or staff numbers have been provided. This number would help determine the times of
day/night when most vehicle movements would occur.



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Our Ref: 290_KNG01                                                                                2 May 2018