Abstract:
Today, noise barriers are recognized as the most effective noise minimization measures of
road traffic noise near sensitive receptors located in the road surrounding areas. Especially
where the urban occupation is characterized by buildings of low height. For higher buildings
noise barriers can not be a completely effective solution. One of the additional measures to
increase efficiency may consist of placing, on top of noise barriers, an edge for reducing
diffraction more efficiently without significantly increasing its height. We present a case study
in which diffracting edges were place few years after the implementation of noise barriers,
and through the relationship between sound attenuation and noise perception it is possible to
conclude that the benefits in population of this intervention are higher than expected.
