3 Gibson Road NSC Application Letter

Existing Operational Issues

As noted above, the existing carpark contains 31 carparks. These parks are 90degree parking accessed
from a central aisle which is 6.2m wide. This is a blind aisle carpark, so all vehicles must currently enter and
exit from the same location.

The entry/exit for this carpark is off a driveway shared with adjacent 1 Gibson Road. There is very short
distance between the carpark entry/exit to the shared central driveway, and the combined car park entry/exit
from Gibson Road. This is causing several operational issues which are illustrated on Drg 8548-003:

1) The entry/exit point to the carpark requires a very tight turning circle to get to the shared driveway and
   Gibson Road.
2) Due to the blind aisle nature of the carpark, vehicle movements are limited when there is a need to turn
   around (eg in the event of no carparks being available and having to turn around to exit the carpark).
3) Vehicles exiting the carpark to the Gibson Road crossover must take a wide turning circle to negotiate
   the tight, short distance between driveway and crossover, and to avoid bollards protecting existing
   aboveground Unitywater infrastructure located immediately to the left. This results in vehicles pushing
   towards the centre of the aisle, which blocks entry to the carpark.
4) This often also results in the same vehicle requiring additional width at the access crossover, blocking
   entry to the driveway from Gibson Road.
5) Vehicles trying to exit individual parking spaces in the meantime are often forced to wait until the aisle is
   cleared.
6) Vehicles waiting to utilise parking spaces that are about to be vacated are also forced to queue, for the
   same reason.

The above issues have been highlighted by the client, causing frustration to both business owners and the
public wishing to use the carpark. The swept path analyses included on Drg 8548-003 confirms these issues
(Attachment 3).

PROPOSED WORKS

Carpark Adjustments

To mitigate the issues caused at the carpark entry/exit point, the following solutions are proposed:

        Convert the existing carpark for Lot 0 BUM105742 to one way only, with entry only from the current
         shared driveway, exit via a new driveway and crossover.
             o Vehicle movements to be controlled by the addition of signage and linemarking, as a
                  minimum design per MUTCD/AS1742 and AS2890.
        Install a new driveway and commercial access crossover to Gibson Road at the end of the current
         blind aisle.
             o Crossover to be provided per NC Std Drg RS-051, Type B
             o Driveway width to be 5.0m, as exit only.
             o Vehicle swept path checks have been undertaken for vehicles exiting this driveway to
                  Gibson Road. Swept paths per Austroads Turning Path Guidelines and AS2890.1.

The proposed adjustments have been documented on the attached drawings.

As the operational issues are caused predominantly by vehicles exiting the carpark, converting the driveway
to one-way and providing a new dedicated “exit only” driveway and crossover will alleviate the current bottle-
neck issues.

We note: Widening the existing shared access crossover off Gibson Road was considered. However, whilst
this would assist with vehicle movements exiting the shared driveway, it would not change the short distance
between the carpark exit and this driveway, nor alleviate the confined movement spaces within the carpark
itself. The widening would also be limited to the northern side of the driveway, to avoid the existing
aboveground Unitywater infrastructure on the other side. This option would also considerably impact all
businesses who use the shared access, as the current only entry/exit point.



 3 Gibson Rd, Noosaville – Development Application for Proposed Carpark Alterations                 Page 2 of 10