Feasibility Study for the Measurement of Tyre / Road Noise in Korea

Many different approaches are used for assessment of the acoustic performance of pavements. Noise measurement methods on the road are Coast-by, Controlled Pass - by, Static Pass - by, Close Proximity Method, and Inside the Vehicle Method. There are two proximity methods for the measurement of tyre/road noise : sound pressure method(CPX) and On board sound intensity method. The close - proximity method defined in the International Standard ISO 11819-2 is frequently used to assess the acoustic characteristics of the road surface. However, noise measurement using CPX trailer is almost not used in Korea because Investment in measuring vehicle needed. Therefore, The feasibility of simple on board sound intensity method of tyre/road noise was studied.