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  • Noise and Vibration
  • Air Quality
  • Airport and Airspace Planning
  • Climate and Energy
  • Program Planning and Management
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Project Spotlight

NCHRP Report 791 - Supplemental Guidance on the Application of FHWA's Traffic Noise Model (TNM)

Under the direction of the Transportation Research Board (TRB), HMMH recently completed NCHRP Project 25-34, resulting in NCHRP Report 791 - Supplemental Guidance on the Application of FHWA's Traffic Noise Model (TNM). HMMH investigated sixteen different research topic areas to identify best practices and provide significant guidance on applying The Federal Highway Administration (FHWA)’s Transportation Noise Model (TNM) to accurately, consistently, and efficiently model traffic-generated noise in a variety of settings that has not been previously addressed.

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