Tyre/road noise testing on various road surfaces - report from the NordTyre project

摘要

A Nordic project, NordTyre, was started in 2011, and the main purpose of the project is tornestablish scientific evidence of the tyre/road noise contribution to road traffic noisernemissions in the Nordic countries. As the first delivery to this project, SINTEF was engagedrnto write a State-of-the-Art report on tyre/road noise testing on various road surfaces,rnincluding the ISO 10844 test surface. The report is based on a literature study, mainlyrnfocus on publications from the period 2005-2011. Results from on measurements of carrntyres on typically rough-textured pavements found in the Nordic countries like Norway,rnSweden and Finland, as well as more smooth surfaces found in Denmark are presented.rnOne of the main findings is that the spread in noise levels on such rough-textured surfacesrnis much less than on an ISO surface. The noise ranking of tyres can also be considerablyrndifferent. This indicates a reduced efficiency of tightening the noise limits for tyres on theserntypes of surfaces and the introduction of the tyre labelling system in Europe. The paperrnpresents the main results from the study, as well as proposals for further work in thernNordTyre project.