Railway applications - Acoustics - Measurement of noise emitted by railbound vehicles (ISO 3095:2025)

This technical document establishes internationally recognized methodologies for measuring noise generated by railway vehicles. It outlines the specific procedures required to assess acoustic emissions produced during various operational conditions, ensuring consistent and reliable data collection across different testing environments. The guidelines cover the arrangement of measurement sites, the positioning of microphones relative to the rolling stock, and the determination of reference points for sound pressure levels. By adhering to these specified protocols, manufacturers and operators can obtain comparable results regarding the acoustic signature of trains. The approach emphasizes the use of standardized background noise conditions and precise timing for data acquisition during passes. This framework supports the evaluation of noise impact on surrounding communities and helps in the development of quieter transport technologies. The document serves as a comprehensive reference for engineers and acoustic specialists involved in the design, testing, and certification of railway systems, facilitating harmonization in noise assessment practices globally without referencing specific national bodies or exact dates of issuance.