RFI - 20210153 Maple St Traffic Assessment

 PASSING OPPORTUNITY AND VEHICLE MANOEUVRABILITY
In the Information request, Item 4, Council has sought additional information in particular in the area between
Chainage 40 and 80, specifically:

• if two B99s can pass each other between Chainage 40 and 80; and
• if they are unable to pass, what systems are in place to avoid collisions and reduce risk of safety hazard (e.g.,
parabolic mirrors, give-way signs/line-marking).


RECOR has undertaken a swept path analysis of the subject section of the driveway. Although it has been
demonstrated that a B99 and B85 are able to pass each other in accordance with the requirement of AS2890.1, the
additional turning radius required for two B99 vehicles to manoeuvre means they are unable to simultaneously
manoeuvre around the corners as shown in Figure 5-1 below.




Figure 5-1 – Two B99 vehicles manoeuvring Ch40 to Ch80


As a result of the above, and to ensure the safety of this stretch of driveway, the driveway will be modified to rely on
a give way system to reduce vehicle conflicts. Both approaches are to have a marked give way line to require them
to give way to any traffic already on the constrained section of road. The convex mirrors located at the opposite
corners of the driveway will improve visibility of cars on the driveway due to obstructed line of sight from the
buildings. On the rare occasion that two vehicles enter that section of the driveway at the same time, the awareness
and vigilance of the drivers will have been enhanced by the signage and the consequent limited speed will reduce
the risk of collision.




Project number 20210153                                                                                         Page 13 of 20
File 20210153 Maple St Traffic Assessment Report.docx, 2023-05-04 Revision 0

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