Traffic Engineering Letter · MCU24/0120

REVISED STOPPING SIGHT DISTANCE REVIEW

Modus has undertaken a revised Stopping Sight Distance (SSD) assessment in line with the
Austroads series based on the following parameters as outlined by Noosa Council:

N    Design Speed (V): 35 km/hr (as demonstrated on Figure 1 a vehicle cannot complete the
     throughbound manouevre at a speed at or near 40 km/hr),

N    Reaction Time (RT) 2.5 seconds,

N    Coefficient of Deceleration (d): 0.46,

N    Longitudinal Grade (a): -4.1%

On this basis, the revised SSD requirement is 36.0m. The minimum SSD required for Unit 2 driveway
is illustrated below on Figure 3.

Figure 3    Unit 2 Garage SSD Assessment




Therefore, the minimum SSD of 36.0m is able to be accommodated along Avocet Parade, such that an
unimpeded driver line of sight is provided for a southbound vehicle along Avocet Parade to react and
brake for a vehicle exiting the Unit 2 driveway.



Traffic Engineering Letter – Further Advice Response
3 Avocet Parade, Peregian Beach                  -6-