Vehicle Pass-by Noise

All road-going vehicles must pass strict noise emission targets for type approval and conformity of production. HBK’s pass-by test solutions ease the burden of dealing with complex regulations and help you optimize your designs to meet them.

Request a quote

Sort By :

2 Categories grid_view format_list_bulleted

Indoor Pass-by Testing

Indoor pass-by is commonly used in development engineering and detecting noise source contributions.

Highlights

Outdoor Pass-by Testing

Outdoor pass-by is the definitive method for certifying a vehicle type approval.

Highlights

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.

HBK Pass-by Solutions download

Main Menu

Main Menu

Main Menu

Main Menu

Vehicle Pass-by Noise

Indoor Pass-by Testing

Highlights

Outdoor Pass-by Testing

Highlights

Acoustic Characterization

Pass-by Noise Standards

Indoor Test Standards

Related Information

We have moved ${referer} to www.hbkworld.com

We have moved ${referer} to www.hbkworld.com

We have moved ${referer} to www.hbkworld.com

We have moved ${referer} to www.hbkworld.com

We have moved ${referer} to www.hbkworld.com