Main Menu

See All Simulação e Análise See All DAQ See All Drivers API See All Utilitário See All Controle de vibração See All Calibração See All DAQ See All Portátil See All Industrial See All Analisadores de potência See All Condicionadores de sinal See All Acústica See All Tensão e Corrente See All Deslocamento See All Força See All Células de carga See All Multicomponente See All Pressão See All Deformação See All Strain Gauges See All Temperatura See All Inclinação See All Torque See All Vibração See All Acessórios See All Controladores See All Excitadores de medição See All Excitadores modais See All Amplificadores de potência See All Sistemas Shaker See All Soluções de teste See All Atuadores See All Motores de combustão See All Durabilidade See All eDrive See All Sensores de teste de produção See All Caixas de transmissão See All Turbo Charger See All Cursos de formação See All Acústica See All Monitorização de activos e processos See All Energia eléctrica See All Sensores personalizados See All NVH See All Sensores personalizados do OEM See All Vibração See All Integridade estrutural See All Transporte automotivo e terrestre

Main Menu

See All nCode - Análise de Durabilidade e Fadiga See All ReliaSoft - Análise e gerenciamento de confiabilidade See All API See All Ruído do produto See All Ruído de passagem de veículos See All Electroacoustics See All Identificação da fonte de ruído See All Ruído ambiental See All O que é potência sonora e pressão sonora See All Certificação de ruído See All Teste de produção e garantia de qualidade See All Análise e Diagnóstico de Máquinas See All Monitoramento de integridade estrutural See All Teste de bateria See All Introdução à Medição de Energia Elétrica Durante Transitórios See All Diagrama de circuito equivalente do transformador | HBM See All Sensores OEM para a indústria agrícola See All Sensores OEM para aplicações robóticas e de torque See All Dinâmica estrutural See All Ensaio das propriedades dos materiais

Ruído de passagem de veículos

The external sound of a moving vehicle is part of its character and can be an essential part of its appeal. But the collective traffic noise from thousands of cars and trucks can be considerable. To help reduce noise in our environment, government agencies set pass-by noise limits for each type of ground vehicle – critical regulations that must be respected.


Acoustic Characterization

Characterizing the overall acoustic signature of a vehicle requires measuring it while in operation as it passes by stationary microphones. Measurement standards stipulate how the vehicle must be driven, both at constant speed and under acceleration, when passing through the test area. They also define the road surface and weather conditions that must exist for a valid measurement.

Pass-by Noise Standards

Pass-by noise measurement is mandatory for automotive manufacturers for type approval and conformity of production.

The measurement procedures and conditions are defined by international standard ISO 362, whilst the accepted noise emissions are stipulated in UN regulations.

  • R51 for most types of vehicle from passenger cars to heavy commercial vehicles 
  • R41 for two and three-wheeler vehicles 

In some countries, local regulations may also be in force, but all follow the same general procedure for testing. In addition, pass-by noise measurements can be used for product development and troubleshooting.

Since pass-by testing is an intensely standardized area, it is important to stay abreast of the latest developments. Our software helps guide you through all of the required testing steps for the relevant standards, ensuring that mandatory information is logged, the measurements are performed within the required operating limits, and the correct calculations are performed to produce the final result.

Indoor Test Standards

For many years, indoor testing has been used to support vehicle pass-by noise, both in product development and problem troubleshooting. ISO 362-3 describes the procedure and the required equipment.

In 2019, R51 Annex 7 added the indoor method for type approval. Consequently, our software was updated to simplify the process of indoor pass-by measurements for regulatory testing with the emphasis on ease of setup and simplicity of compliance.

Pass-by Testing Solutions

The data-centric pass-by solution enables an optimised workflow with the full capability of combining the data of indoor and outdoor pass-by measurements via the Team Server – a shared data storage system.

Learn more about our solutions for vehicle pass-by noise testing: