Road noise reduction through Covid measures

2. April 2020 Christoph Ammann Acoustics & noise protection

#Acoustics, #Measurement, #Monitoring, #Road noise

Since the beginning of the year, we have been testing a solar-powered noise monitoring station at our branch in Aarau. Thanks to the test operation, we have an ideal data basis for investigating the effects of the COVID-19 measures on noise pollution.

Road noise reduction through Covid measures

We compared the noise pollution on a Wednesday in January (before lockdown, blue line) with the noise pollution on a Wednesday in March (during lockdown, green line). The noise pollution at Entfelderstrasse in Aarau has decreased by 2-6 decibels depending on the time of day. Only during the morning peak hour is hardly any reduction visible. Considering that a reduction of noise pollution by 3 decibels corresponds to a halving of traffic, one can easily imagine the huge impact the COVID-19 measures have on the mobility behavior of the people in Aarau. For once, we all wish that the residents along Entfelderstrasse would soon complain about the road noise again.

Monitoring measurements give us the opportunity to better know and understand the development of noise pollution over time. The example with the effects of the COVID-19 measures is only one of many.

CPX road surface measurements - commitment to research and standardisation pays off

Road noise is significantly influenced by the acoustic properties of road surfaces. In order to record these, G+P introduced the first CPX measurement system in Switzerland in 2008. Almost 15 years of know-how and continuous development of the measurement system, through research and standardisation work, have paid off. Our customers benefit from reliable and robust results with the highest repeatability. For the canton of Fribourg, which is fully committed to “whispering” road surfaces, accurate measurement results are essential for the implementation of its noise protection strategy.

28. June 2023 Nadège Marchiando Acoustics & noise protection

1 HP, 2 HP is good! But is 100 HP still good?

Noise and exceedances of permissible limits are highly relevant issues of great importance, especially when it comes to public health. In this context, the analysis of noise generated by the installation of outdoor heat pumps (HPs) in densely populated neighbourhoods is crucial. Fundamental questions arise such as "If all homeowners decide to install a heat pump, is there not a risk of exceeding the permissible limits in the neighbourhood?". Expertise is needed to answer these questions. G+P, an expert in noise protection, is your ideal partner.

6. September 2023 Manuel Kunz Acoustics & noise protection

3D texture measurements - visual method for determining the surface properties of road pavements

Low-noise road pavements are used as effective noise abatement measures in Switzerland. To determine the actual effect of low-noise road surfaces, G+P uses numerous measurement methods. While the most common measurement methods record the properties of road pavements acoustically (e.g. with microphones), 3D texture measurements can be used to measure and assess the visual properties of road pavements that are relevant for noise generation. G+P has been carrying out such 3D texture measurements with its own photogrammetry scanner since 2022.

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