3D noise calculation model – Area-wide statements on road noise pollution

According to the Federal Office for the Environment, every seventh person in Switzerland is affected by excessive noise. But which properties does this affect and how high is their noise pollution? How will the noise pollution situation develop with future traffic development or with the installation of low-noise pavements? These and other questions can be answered quickly and easily with area-wide road noise registers. Grolimund + Partner AG has the know-how to build up large noise calculation models and to calculate a road noise register from them.

3D noise calculation model – Area-wide statements on road noise pollution

Noise protection as a permanent task

The enforcement authority is obliged to protect the population from excessive noise. Owners of roads are also subject to the legal requirements for information and disclosure of the Noise Abatement Ordinance (LSV) as well as the Geoinformation Act (GeoIG) and the Geoinformation Ordinance (GeoIV).

Cantons and cities therefore require an area-wide road noise register. It serves to determine and monitor the current noise situation and allows for early and rapid action in case of need.

Our solution

G+P employees create a large-scale and building-specific 3D noise calculation model. The input data is composed of numerous basic data with different levels of detail and quality. The current available data are always used for the model construction. Any information from previous noise remediation projects - such as verified receiving points - is included in the overall noise model. 

Flächendeckendes Gesamtlärmmodell mit einheitlichem Stand für jeden DatensatzArea-wide total noise model with uniform status for each data set

Thanks to automated data processing procedures with specially developed tools, homogeneous data sets result. All input data for the noise calculation are stored in a geodatabase. This ensures the reproducibility of the noise calculation at any time.

Bildung von homogenen Emissionssegmenten aus verschiedenen Parametern

Formation of homogeneous emission segments from different parameters

Achieving results with distributed computing power

Noise calculation for thousands of streets and hundreds of thousands of buildings is a computationally intensive task. We have the necessary IT infrastructure to process large volumes of data with the SLIP20 noise calculation software on many computers simultaneously. And with the implementation of the sonROAD18 emission model in SLIP20, we are also prepared for future noise calculation requirements.

Administration and query in DECIBASE

With DECIBASE, G+P offers a modern, user-friendly web application with which the calculated road noise register can be displayed, queried, edited and periodically updated. DECIBASE is designed as a web GIS and displays emission data and noise pollution of various conditions clearly arranged on a map and in forms or lists.


Your benefit

An overall noise model for road noise offers you comprehensive benefits:


  • Homogeneous road noise cadastre with current noise levels

  • Building-specific information retrieval and rapid plausibility check of noise assessments for new buildings and conversions thanks to the user-friendly DECIBASE web application

  • Ordering of noise pollution scenarios (e.g. future traffic development, low-noise pavements, speed reductions) as a decision-making basis for the development of a noise and quiet protection strategy

  • Simple periodic updating of the area-wide road noise register thanks to automated data processing procedures

  • The data format meets the requirements of GeoIG and GeoIV.

Reference projects

Total Noise Model Canton Aargau
Total noise model canton Uri