Road surface characteristics are the core influencing factors for tyre/road noise generation mechanisms. Dependingon the pavement wearing layer mixture composition, type surfaces have different acoustical properties. Acoustical parametersand acoustical behavior change over the time because of the effects of traffic and environmental conditions. Usually low noisepavements can be characterized with very good acoustical parameters but at the same time good acoustical properties deterioratesover the time. Paper presents the research study of surface type and age effects on tyre/road noise levels. Number ofdifferent age and different surface type pavements (conventional AC and SMA pavements, low noise SMA TM, TMOA andPA) were evaluated and compared in terms of acoustical performance. Analysis of CPX noise level measurement results arepresented in the paper followed with the conclusions and recommendations of low noise pavement application for severe climateregions.

DOI: https://doi.org/10.3846/enviro.2017.152