摘要: |
In response to an interest in traffic noise, particularly tire-pavement noise, CDOT elected to conduct tire-pavement noise research. Following a rigid set of testing protocols, data was collected on highway traffic noise characteristics along with safety and durability aspects of the associated pavements. This report completes a comprehensive, long-term study to determine if particular pavement surface types and/or textures can be used as quieter pavements, and possibly be used to help satisfy FHWA noise mitigation requirements. The study addressed: 1) The noise generation/reduction characteristics of pavements as functions of pavement type, pavement texture, age, time, traffic loading, and distance away from the pavement; 2) Correlations between source measurements using on-board sound intensity (OBSI) and wayside measurements including both statistical pass-by (SPB) and time-averaged measurements; and 3) The collection of data that can be used for validation and verification of the accuracy of the FHWA Traffic Noise Model (TNM) to use on future Colorado highway projects. |