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Full Description

This recommended practice is to provide guidance in acceptable procedures for measuring highway noise levels.
 

Document History

  1. AASHTO R 20-99 (2021)

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    Standard Recommended Practice for Procedures for Measuring Highway Noise

    • Most Recent
  2. AASHTO R 20-99 (2008)


    Standard Recommended Practice for Procedures for Measuring Highway Noise

    • Historical Version