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National Cooperative Highway Research Program

The Transportation Research Board (TRB) of the National Academies recently selected HMMH to lead the research team conducting National Cooperative Highway Research Program (NCHRP) 25-34: Supplemental Guidance on the Application of FHWA's Traffic Noise Model (TNM).

The goal of the 30-month research effort is to provide guidance on best modeling practices for scenarios for which there is currently limited or no technical guidance. In addition to recommending best practices, the research team will assess both the sensitivity of the model to the proposed methodologies and the accuracy of the results obtained using the practices.

This research project is an opportunity to identify and test methodologies that currently exist and to provide recommendations for uniform best practices that can be used nationwide.

Papers & Presentations