Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Office of Planning, Environment, & Realty (HEP)
PlanningEnvironmentReal Estate

HEP Events Guidance Publications Awards Contacts

FHWA Traffic Noise Model Version 1.1

The FHWA TNM Version 1.1 is the first 32-bit upgrade to the FHWA TNM Version 1.0 release package. It is a complete release package. Use of the FHWA TNM Version 1.1 requires prior purchase and registration of the FHWA TNM Version 1.0, released in March 1998.

The FHWA TNM Version 1.1 includes the following:

Windows 95, 98, and ME users:

There is a Microsoft® Windows 95/98/ME compatibility bug in the FHWA TNM Version 1.1. This error does not occur for Windows NT or Windows 2000 users.

The following documents are associated with the FHWA TNM Version 1.1:

  1. FHWA Traffic Noise Model® Version 1.1 User's Guide (Addendum) (HTML), or (PDF - 1.9Mb) September 2000
  2. For instructions on how to install TNM 1.1 alongside an existing TNM installation click here,
Updated: 07/15/2011
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000