Reduction of rolling noise. Preliminary study (VIEME)

In autumn 2005 the Ministry of Transport and Communications of Finland launched a rolling noise reduction project (VIEME) with the aim of gathering data on noise abatement in road transport. The project examines noise from road surfaces and tyres as well as dispersion of noise. The purpose of the project is to reduce noise levels and exposure to noise without increasing dust problems or decreasing traffic safety. The project will generate new data on the correlation between the creation and dispersion of noise and dust. The now completed preliminary study, which launched the project, is an overview of data on low-noise road surfaces and tyres as well as on their effect on the creation of rolling noise and road dust. It also discusses how further studies on the subject should be conducted. Furthermore, it shows that in many areas more information is needed on the qualities, possibilities and impacts of low-noise surfaces and tyres to support noise abatement work. Studies of autumn 2005 showed that the planned system based on noise measurement by the noise trailer NOTRA and dust measurement by the mobile laboratory "Sniffer" works well. The preliminary study gave reason to complete the project as follows: 1) Surface noise studies should be performed in different times of the year and in different weather conditions. 2) The differences between winter tyre types in terms of noise may be greater than expected, which gives impetus to focus on this sector. 3) Pass-by, including measurements of vehicle noise emissions and levels when fitted with different tyres, should be carried out. 4) A more extensive and versatile research data is needed to clarify the dust creation of low-noise road surfaces. More studies on applicable sectors of the HILJA project should be performed and measurements that have now been started within the VIEME project should be continued even after the completion of the project. 5) The importance of low-noise surfaces and different tyre types to dust creation and surface cleanability should be studied. 6) It is possible to develop an eco-indicator for problems of traffic noise and dust. This would provide tools to include these environmental questions into acquisition processes. This report may be found at http://www.mintc.fi/oliver/upl241-Julkaisuja%2012_2006.pdf