34 Elm St - Traffic Assessment - Rev C

34 Elm St, Cooroy


The development proposes to widen the Diamond Lane pavement to the northern boundary for
the development frontage. This will result in a sealed pavement approximately 6.5m wide for
approximately 14m east of the access to Wessel Petroleum which will facilitate two way traffic in
front of the development frontage. This road widening will also allow eastbound vehicles to
queue on Diamond Lane (in front of the development) while waiting for a westbound vehicle (in
the 3.5m section of Diamond Lane) to pass. This queueing can occur clear of the Wessel
Petroleum access and the Diamond Lane / Elm St Intersection.
The proposed development will assist in improving the functionality of Diamond Lane by reducing
the volume of traffic using Diamond Lane and by facilitating queuing at a safer location than the
current situation.

 3.5 Development Impact on Diamond Lane – Summary
The Diamond Lane / Elm St intersection, in conjunction with the Wessel Petroleum and Cooroy
Motel accesses are non-compliant to current standards.
The proposed development will improve the safety and functionality of this area by:

        Removing the Cooroy Motel access onto the Elm St / Opal St intersection;
        Reducing the volume of traffic at the non-compliant Elm St / Diamond Lane intersection;
         and
        Providing a queuing and passing area on Diamond Lane adjacent to the development.

    4. Bus Stop Modifications
The proposal includes moving the existing bus shelter on Elm St approximately 10 – 15m north and
the bus bay approximately 5m north. As the proposed relocation is less than 20m, approval from
Translink is not required and can be approved by Council as part of the development approval
process.
These adjustments will not have an adverse impact on the functionality of the bus bay.

    5. Conclusion
In conclusion, 360 Civil Consulting has undertaken an assessment of the access arrangements for
the proposed development on Opal St, and the impact that the proposed development will have
on Diamond Lane.

The sight distances from the proposed Opal St access is compliant with Austroads SISD and MGSD
as well as AS2890.1 Minimum SSD.

The proposed development will improve the current arrangement on Diamond Lane by removing
the current Cooroy Motel access, reducing the volume of traffic to the Diamond Lane / Elm St
intersection, and provide a queueing and passing opportunity for vehicles on Diamond Lane
without affecting the access to Wessel Petroleum or traffic flow on Elm St.




360 Civil Consulting - Traffic Assessment                                        Page 11 of 13