Noise

Ongoing Research:

Improvement of the FHWA Traffic Noise Model (FHWA TNM)

Performer(s): Volpe National Transportation Systems Center
Sponsor(s): FHWA

For more information:

Bob Armstrong. FHWA, HEPN-20, 400 7th Street, SW., Washington, D.C. 20590;
Tel. 202-366-2073; Fax 202-366-3409; E-mail: Robert.e.armstrong@fhwa.dot.gov.

Abstract

Verification of the FHWA Traffic Noise Model (TNM), released in March 1998, was limited; i.e., it included three comparisons with point source geometry and two comparisons of in-situ measurements of barrier performance along actual highways. This multiyear research study will validate all aspects of the model. The initial phase of validation will include the elements of the model most often used in highway traffic noise analyses; validation of all other elements will follow. Field measurements made to support the model validation will be used to begin study of atmospheric effects on the propagation of highway traffic noise, effects which may be included in the FHWA TNM in the future. This research study will also address problems and inconveniences users have identified subsequent to the release of the FHWA TNM, as well as incorporate improvements in the model’s graphical user interface. An interim upgrade of the FHWA TNM should be released in the summer of 2000; a final upgrade should be released during 2002.

Noise Barrier Design Manual and Videotape

Performer(s): Volpe National Transportation Systems Center
Sponsor(s): FHWA

For more information:

Steve Ronning. FHWA, HEPN-20; 400 Seventh St., SW., Washington, DC 20590;
Tel: 202-366-2078; Fax: 202-366-3409; Email: Steven.ronning@fhwa.dot.gov.

Abstract

This research will develop a manual for noise barrier design. It will be a how-to document on the principles of noise barriers and barrier design that is useful to both the novice and the skilled practitioner. The manual will be complemented by a videotape, which emphasizes the material contained in the manual.