本欧洲标准规定了在混响条件下测量道路交通噪声降低装置的机载隔音性能的实验室方法。它涵盖了在EN ISO 10140-2和EN ISO 10140-4描述的测试设施内合理组装的障碍物的内在性能的评估。 该方法不用于确定安装在非混响条件下的道路上的降噪装置的空气隔音的固有特性

This European Standard specifies the laboratory method for measuring the airborne sound insulation performance of road traffic noise reducing devices in reverberant conditions. It covers the assessment of the intrinsic performance of barriers that can reasonably be assembled inside the testing facility described in EN ISO 10140-2 and EN ISO 10140-4. This method is not intended for the determination of the intrinsic characteristics of airborne sound insulation of noise reducing devices to be installed on roads in non-reverberant conditions.