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Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 1: Statistical Pass-By method (ISO 11819-1:2023); German version EN ISO 11819-1:2023


The emission of road traffic noise greatly depends on road surface characteristics, notably on texture and porosity; the latter due to the flow resistivity of the air voids. Both these characteristics influence the generation of tyre/road noise and, in addition, the porosity can influence the emission of sound, particularly when the emission takes place close to the surface. Power unit noise, which is usually generated at a greater height above the road surface than tyre/road noise, can also be affected during emission by the porosity characteristics of the road surface. These effects lead to differences in sound levels, associated with a given traffic flow and composition, from different road surfaces of up to 15 dB, which can have a substantial impact on the environmental acoustic quality alongside a road. It is therefore important to be able to measure this influence by a standardized method and to arrive at a quantitative ranking of road surfaces with respect to traffic noise. This document offers such a method, the objective of which is to satisfy a need expressed by road planners, road administrators, contractors, manufacturers of so-called "low-noise surfaces" and by other parties concerned with the prediction and control of road traffic noise.





Planned document number

DIN EN ISO 11819-1

Project number


Responsible national committee

NA 001-01-05 AA - Measurement of sound exposition on road vehicles, including measurements inside the passenger compartment and at the workplace  

Responsible european committee

CEN/TC 227/WG 5 - Surface characteristics  

Responsible international committee

ISO/TC 43/SC 1/WG 33 - Measuring method for comparing traffic noise on different road surfaces  

draft standard

Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 1: Statistical Pass-By method (ISO/DIS 11819-1:2021); German and English version prEN ISO 11819-1:2021
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previous edition(s)

Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 1: Statistical pass-by method (ISO 11819-1:1997); German version EN ISO 11819-1:2001

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