NA 005

DIN Standards Committee Building and Civil Engineering


Road and airfield surface characteristics - Characterisation of the acoustic properties of road surfaces


This standard describes an assessment procedure for characterising the effect of different pavement types on road traffic noise emission. The procedure relies on the application of an established measurement method and specifies the detailed conditions for its use to allow the determination of characteristic values for the acoustic performance of road surface types with a given accuracy. Performance is characterised in absolute terms rather than with respect to a reference surface, as specifications for the latter differ from country to country and could contribute to additional uncertainty. The procedure is intended to be suitable for the following applications: • For the acoustic characterisation (i.e. the determination of initial acoustic properties) of generic or proprietary road surface products. • For the conformity-of-production (COP) assessment of newly laid surfaces, e.g. to assess compliance with acoustic labels and/or contract specifications, or to assess the homogeneity of the surface over its length. • For the monitoring of the acoustic properties of road surfaces over the course of their working lifetime, so as to help inform surface maintenance/replacement policies and increase understanding of the acoustic durability of road surfaces. The values derived from this procedure are intended to be used for the following purposes: • To characterise the initial acoustic properties of a road surface type (the acoustic label) using a common procedure across Europe. Such an acoustic label will serve as a baseline for setting performance requirements in public procurements, COP assessments and monitoring over the working lifetime of the surface. The label permits the comparison of different road surface types in an unbiased manner. • To verify the acoustic quality and homogeneity of a newly laid road surface. • To determine the acoustic quality and homogeneity of a road surface at a given point during its working lifetime; the collation of sufficient data on the same surface over time will allow predictions of acoustic behaviour and may help to drive surface design/development. In addition the procedure described within this document also allows: • The establishment of reference values for wider road surface 'families' or categories of surface types; • Derivation of input parameters for road surface corrections within environmental noise calculation methods (in particular, the harmonised CNOSSOS-EU method described in 2015/996/EC Directive)





Planned document number


Responsible national committee

NA 005-10-08 AA - Surface characteristics (national mirror committee for CEN/TC 227/WG 5)  

Responsible european committee

CEN/TC 227/WG 5 - Surface characteristics  



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