Noise score rating models for Q-Zones and embedded parks

Abstract

CITYHUSH project supports city administrations in the implementation of noise action plans according to the EU directive 2002/49/EC. The action “Noise and vibration control at source – Acoustically green vehicles” validates noise score rating models in a case in the Athens area, including Q-Zones (Quiet zones) and embedded parks, identifying perceived benefits on noise. Annoyance for PTW (powered two-wheeler) is masked in general traffic annoyance. However, a PTW pass may become recognizable and clearly distinct within the traffic noise environment formed by the road traffic flow and synthesis. Several strategic noise mapping scenarios with high noise levels from PTWs, as well as low frequency noise annoyance events, were evaluated proving that the noise levels in a Q-Zone and embedded parks may be reduced with an increased park capacity. Measures with a special focus on the reduction of conventionally powered motorbikes and scooters (PTWs) were evaluated. PTW’s emission values were derived, from known values and past measurements, in the form of a correction function as a function of speed to perform simulation analysis for various analogies of conventionally versus electrically driven PTWs. Relevant noise difference maps indicate noise reductions, especially when additional measures are included, such as speed limits.

Keywords

• PTW
• Noise mapping
• Noise annoyance
• City Hush