GB/T 20243.2-2025
ActiveAcoustics—Measurement of the influence of road surfaces on traffic noise—Part 2: The close-proximity method
声学 道路表面对交通噪声影响的测量 第2部分：近距法
Application Summary AI generated
This standard specifies the close-proximity (CPX) method for measuring the influence of road surfaces on traffic noise, using a standardized tire mounted on a test vehicle to capture sound pressure levels near the tire-road interface. It is applied in the fields of road engineering and environmental acoustics for evaluating and comparing the acoustic properties of different pavement types, such as asphalt or concrete, under controlled conditions. The standard is used by testing laboratories and road authorities to assess noise reduction performance of road surfaces for compliance with traffic noise regulations.
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