Compatibility of the ROSANNE noise characterization procedure for road surfaces with CNOSSOS-EU model
Résumé
The European project ROSANNE is preparing a procedure for the characterization of road surface noise properties, to be considered for standardization. The proposed procedure, presented in another paper, is based on tire-road noise measurements using the CPX method. The output will be useful to road administrations and road companies when referring to contractual values in legal documents for road surface construction. Moreover road and environmental administrations are also concerned by evaluating the impact of road surface properties on noise exposure, in particular when implementing the 'Environmental Noise Directive' 2002/49/EC (END). The END requires Member States to produce noise maps and action plans, using a common calculation method, called 'CNOSSOS-EU' and now published in European Directive 2015/996/EC. The purpose of the present study is to check that the road surface characterization delivered by ROSANNE is consistent with the road surface correction specified in the CNOSSOS-EU model for road traffic noise emission. In this paper, the main features of both systems are briefly presented and compared: noise indicators, frequency ranges, pavement definition, reference conditions and measurement conditions. Then recommendations are made on how the ROSANNE characterization procedure could provide valuable and compatible input to the European calculation method for road noise prediction.
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