CEN - PREN 14389
Road traffic noise reducing devices - Procedures for assessing long term performance
|Publication Date:||1 December 2021|
|ICS Code (Road equipment and installations):||93.080.30|
This document specifies a method for evaluating the working life of Noise Reducing Devices used alongside roads according to the relevant exposure conditions.
It also specifies a method for determining the acoustic characteristic at the end of the working life.