Att 2 - Traffic Plan

34 Elm St, Cooroy


some accesses that do not comply with the Normal Design Domain (NDD) standards. If applicable,
this will reduce the required SISD.

2.5     Sight Distance Improvements
Currently the sight distance from the southern access to the vehicles travelling south on Elm street
is restricted by the low vegetation associated with the existing street tree. The sight distance
would increase to 36m with an observation angle of 109 degrees if the low vegetation from the
existing street tree is removed.




Figure 5 – Vegetation restricting sight distance to the vehicles travelling south on Elm St.

It is also recommended that a kerbside solid yellow line be installed from the exit only access to
the southern end of the current bus bay location on Elm St. This line will restrict vehicles from
stopping in the sight distance zone, protecting the sight distance for vehicles exiting from the site.

2.6     Requirement to comply with Extended Design Domain
EDD criteria can be used to determine the required sight distance where the NDD cannot be
achieved and the geometric road design complies with criteria specified in Austroad’s Guide to
Road Design Part 3 Appendix A. In this instance the road is located in an urban footprint and the
operating speed is ≤ 70 km/hr. The requirement for compliance for the EDD is that the lane width
is greater than 3.0 m. In this instance, the Opal St lane width will be approximately 4.25m once
the development has been completed. Furthermore, the site complies with all general
considerations as detailed in Austroads Part 3, A.3.1. As such, the proposed driveway complies
with the requirements to be assessed under the EDD.




360 Civil Consulting - Traffic Assessment                                                 Page 9 of 22