NordTyre - Tyre/road noise testing on various road surfaces - State-of-the-Art

This report is the first deliverable of the NordFoU project NordTyre.The main purpose of the project is to establish scientific evidence of the tyre/road contribution to road traffic noise emission in the Nordic countries. Furthermore, to establish which combinations of tyres and road surfaces that will yield the lowest noise emissions. This report is a literature study mainly based on available literature from the period 2005-2011.  Focus has been on available data of tyre noise levels on ISO tracks, on other test track road surfaces and on road surfaces representative of pavements used in the Nordic countries. The main results are that the spread in noise levels on rough-textured road surfaces commonly found in Sweden and Norway is much less than found on ISO surfaces. The noise ranking seems to be significant different on rough-textured pavements compared to an ISO surface, but may be better on the smoother road surfaces, as found for example in Denmark.It is necessary to improve the knowledge of the performance of passenger car tyres on normally used Nordic road surface, compared to the coming noise labelling system of tyres in the EU. A measuring program of tyres on similar pavement types in Denmark, Sweden and Norway is proposed. Oppdragsgiver: Norwegian Public Roads Administration