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FHWA Traffic Noise Model (FHWA TNM®), Version 2.5 Look-Up Tables User's Guide

Final Report December 2004

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Prepared for
U.S. Department of Transportation
Federal Highway Administration
Office of Environment and Planning
Washington, DC 20590

Prepared by
U.S. Department of Transportation
Research and Special Programs Administration
John A. Volpe National Transportation Systems Center
Acoustics Facility
Cambridge, MA 02142-1093


This document is disseminated under the sponsorship of the Department of Transportation in the interest of information exchange. The United States Government assumes no liability for its contents or use thereof. This report does not constitute a standard, specification, or regulation.

The United States Government does not endorse products or manufacturers. Trade or manufacturers' names appear herein solely because they are considered essential to the object of this document.


The U.S. Department of Transportation, Research and Special Programs Administration, Volpe National Transportation Systems Center, Acoustics Facility (Volpe Center), in support of the FHWA, Office of Natural and Human Environment, has updated the FHWA TNM Version 1.0 Look-Up Tables released in 1998. The newly released update, TNM Version 2.5 Look-Up Tables, contains sound level results calculated with TNM Version 2.5 and includes a Windows compatible computer program to facilitate easy access to the look-up tables. This document contains the updated look-up tables in their entirety, as well as instructions on use of the accompanying computer program.

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Updated: 10/19/2015
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