AASHTO TP 76

Abstract

This test method describes the procedures for measuring tire/pavement noise using the on-board sound intensity (OBSI) method and the procedures for verification of the measurement system. The test method provides an objective measure of the acoustic power per unit area at points near the tire/pavement interface. The method is so named because the measurement system is on board with the tire under test. <br>The OBSI measurement method described herein permits the tire/pavement noise to be measured directly and allows various pavements and textures to be directly compared. <br>This method is expected to be subject to revision as experience increases and research results are implemented. <br><em>This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.</em>