The acoustic performance of a road surface in terms of noise emissions can be evaluated with various methods, which can be used to check the compliance of the product with the specifications required by laws and standards. Measurement of SPB in urban sites, where vehicles speed is low and traffic flows are not regular, do not correspond to the requirements of ISO 11819 neither can be easily replaced by other methods like CPX or measurement of noise at receivers. A new approach, derived by an adaptation of SPB to urban scenarios, is presented here, as general method for the evaluation of acoustic efficiency given by low emission paving. It has been defined and tested by authors in some different urban scenarios where traffic noise had been identified as the main source of annoyance for residents. In these areas low noise paving of different kind have been employed as noise mitigation actions, thus allowing a comparative analysis of performance.
Autori: Barbieri, Borchi, Luzzi