Traffic Engineering Letter · MCU24/0120

While it is noted that Avocet Parade comprises a posted speed limit of 50 km/hr, it is reasoned that
throughbound vehicles along Avocet Parade at the site frontage will travel at lower speeds to
manouevre through the 90-degree bend.

This is clearly demonstrated on Figure 1 below, which demonstrates a B99 design vehicle travelling
through the Avocet Parade 90-degree bend at constant design speed of 40 km/hr.

Figure 1   B99 Swept Path Assessment at 40 km/hr




Therefore, Modus has assessed the minimum vehicle sight distance requirement for a frontage road
speed of 40 km/hr which is considered extremely conservative.

On this basis, the minimum vehicle sight distance in accordance with Australian Standards AS2890.1
for a domestic driveway is 30m.

Therefore, the minimum vehicle sight distance of 30m for the Unit 2 driveway is illustrated on Figure 2.




Traffic Engineering Letter – Further Advice Response
3 Avocet Parade, Peregian Beach                  -4-