A procedure to estimate reliable mitigated scenarios using the urban SPB

The LIFE NEREiDE project developed monitoring guidelines for low-noise pavements (LNP). A method named Urban Pass-By (U-SPB) was developed in order to increase the applicability of standard evaluation procedures of the noise emitted by LNP. U-SPB originates from standard SPB, exploits unattended measurements and develops an in- lab pass-bys identification. The in-lab analysis allows obtaining a modelled noise level which is due only to road traffic noise passing by the selected road. U-SPB provides a model at the measurement point but standard noise models as CNOSSOS are commonly used to evaluate exposure and mitigation efficiency. However, not all kinds of LNP are represented in modelling methods, and it is hard to choose the right one in software. The present paper reports the application of U-SPB to urban cases with the aim of evaluation how much U-SPB can provide reliable models of scenarios mitigated with LNP. The resulting U-SPB modelled noise levels are compared with the noise mapping model before and after the laying of the LNP. This allows the proper surfaces' choice in software according to the real scenario but based on customizable traffic flows.