Why don’t we use noise monitoring results instead of modeling results?
Monitored noise levels represent a snapshot of existing conditions. This means the monitored noise levels reflect weather and traffic conditions for that time period only. In addition, noise monitoring detects all noise sources present at the monitoring location, which may artificially inflate the traffic noise levels. Noise levels for impact analysis are peak-hour conditions and may vary from the noise monitoring results. The computer model is used to consistently predict future noise levels at peak traffic which is a worst-case condition. Traffic noise impacts are determined from future traffic conditions, which can only be predicted using the computer noise model.
