Tag Archives: measurements

Comparison between IRI from connected cars and IRI from profilometer

Posted on September 13, 2022 by nradmin
Olle Eriksson, Peter Andrén and Thomas Lundberg, VTI, have carried out an evaluation of roughness measurements from connected vehicles. The quality of the roughness data is determined by comparing the estimated IRI (International Roughness Index) from the connected vehicles with the IRI measured...

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Noise from shipping spreads widely

Posted on June 30, 2022 by nradmin
As part of the research project SHIPNOISE, the Swedish National Road and Transport Research Institute (VTI) performs measurements and calculations to assess the possible impact of ship noise on human health. This type of research is common for road, rail and aviation; for example, we know that...

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How vehicles can avoid accidents on newly paved roads

Posted on May 14, 2019 by nradmin
Friction is an important property for road safety. VTI has investigated how roads change in the first few weeks after surfacing work has been completed. Researchers recommend posting warning signs when the road is opened and waiting at least three weeks to measure the friction of the road. A few...

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