07/2398 - Request for information response [As Published] · 132007.2398

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Table 6.1 Traffic Data used in noise model for Cooroy Connection Road
AADT Percent Heavy Traffic Speed
vehicles
Road (Vehicles) (%) (Km/h)
2007 2019 2007 2019 2007 2019
Cooroy Connection Road
Northbound 60/100 60/100,
—_—— : 6900 12391 8.0, 8.0 : ~
Cooroy Connection Road .
Southbound 60/80 60/80

 

 

 

 

 

 

 

 

The 18-hour traffic flow has been taken to be 94% of the daily traffic flow.

6.3 Verification of Road Traffic Noise Model

The results of the 2007 noise monitoring at location NMI have been used to verify the road traffic
noise model of Cooroy Connection Road.

The road traffic verification model uses the 2007 traffic flows, as stated in Table 6.1 and current road
alignment to determine the L10(18 hour). Table 6.2 compares the results obtained from the noise
survey with the calculated results from the computer model.

Table 6.2 Existing Noise Measurements and Calculated L10(18 Hour)

 

 

 

Receptor Measured LI0(18 hour) | Measured L10(!8 hour) | Calculated L10(18 hour)
Height Noise Level (dB(A)) Noise Level (dB(A)) Noise Level (dB(A))
(m) Free field Facade Reflected Facade Reflected

1.2m 64.5 67.0 66.7

 

 

 

 

 

Note: Measured noise level were adjusted to account for a full facade reflection

The road traffic model is considered to be verified since the calculated level is within + 2.0 dB(A) of

the measured level.

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