Abstract
Based on the Close Proximity (CPX) method specified in ISO/DIS 11819-2, we recorded and analyzed the instantaneous tyre/road sound pressure levels with 4 road sections that are constructed with the same pavement surfacing materials, that is, polymer modified friction course (PMFC). A total of 488 segments were made in urban areas with a pair of Standard Road Test Tyre (SRTT). We tried to relate the tyre/road noise with the instantaneous acceleration, vehicle speed, road temperature, road gradient and road surface age to develop a multi-variants model. It was subsequently found that a simple tyre/road noise model linking driving speed and acceleration is the best model. The model provides an easy way to estimate the instantaneous tyre/road noise level. As the tyre/road noise is becoming more dominant component of the road traffic noise, our proposed model has the potential to improve the current practice in estimating the road traffic noise by introducing the interaction effect to statistical tyre/road noise model.
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