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  • Petaluma, CA
    Phone: 707.794.0400
    Denver, CO
    Phone: 720.306.8322
  • Caltrans, Quieter Pavement

    “Quieter Pavement: Acoustical Measurement and Performance”

    I&R developed a comprehensive guidance manual on quieter pavement to be used by noise practitioners and pavement engineers, which summarizes quieter pavement research conducted over a period of about 18 years. The document contains a basic overview of pavement acoustics and how they relate to highway traffic noise, a synthesis of quieter pavement research conducted by or initiated by Caltrans over a period of about 18 years, a summary of the development of the On-Board Sound Intensity (OBSI) methodology of measuring tire-pavement noise at-the-source, a comparison between several measurement methods, a summary of current applicable policy and measurement methodology, and recommended best practices in design. Detailed description of tire-pavement research topics include tire-pavement noise levels on highways and low-speed roads, quieter flexible and rigid pavements, porous pavement, rubberized surfaces, surface texture, pavement joints, bridge decks, grinding, acoustical longevity and durability, heavy vehicles, and a cost-benefit analysis of barriers and pavement. Over 170 references are included. An On-Demand Course was developed for use by Caltrans engineers.

    An online version of the Quiter Pavement Manual can be accessed here: 

    http://www.dot.ca.gov/env/noise/docs/quieter-pavement.pdf

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