What UNECE Regulation No. 51.03 - Acoustic Noise Limits for Motor Vehicles requires
UNECE R51.03 sets declining noise emission limits for M1/N1 passenger and light commercial vehicles: 72 dB(A) from 2016, 70 dB(A) from 2020, 68 dB(A) from 2024 for M1, measured under ISO 362-1 accelerated vehicle approach test conditions, with additional sound emission provisions (ASEP) to prevent real-world noise exceeding type-approval levels.
Pillar: Automotive & Mobility · Authority: UNECE WP.29 - Working Party on Passive Safety / World Forum for Harmonization of Vehicle Regulations · Version: 3.0.0 · Last updated:
Primary source: https://unece.org/transport/vehicle-regulations/un-regulations-annexed-1958-agreement
SHA-256 integrity: 709c5b6d09efb6828ea130b683a370bb1eaa09e7b16eadb4073ef0badafe47ce
Primary Citations — 6 traced to source
- UNECE Regulation No. 51 - Acoustic Noise of Motor Vehicles (03 series of amendments)
- EU Regulation 540/2014 on the Sound Level of Motor Vehicles and Replacement Silencing Systems
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