Details:

Alternative Title:
TNM version 2.5 : addendum to validation of FHWA¿s Traffic Noise Model® (TNM) : phase 1
Creators:
Rochat, Judith L ; Fleming, Gregg G.
Rochat, Judith L ; Fleming, Gregg G. Less -
Corporate Creators:
John A. Volpe National Transportation Systems Center (U.S.)
Subject/TRT Terms:
[+]
Distance FHWA TNM Height Highway Noise Measurement Measurements Modeling Noise Noise Barrier Noise Barriers Recommendations Sound Level Sound Levels TNM Traffic Models Traffic Noise Validation Wind
Publication/ Report Number:
DOT-VNTSC-FHWA-02-01
Resource Type:
Tech Report
Edition:
Final Report; Sept 2002 - July 2004
Corporate Publisher:
United States. Federal Highway Administration
NTL Classification:
NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS;NTL-ENERGY AND ENVIRONMENT-ENERGY AND ENVIRONMENT;
Abstract:
(FHWA) is conducting a multiple-phase study to assess the accuracy and make recommendations on

the use of FHWA’s Traffic Noise Model (TNM). The TNM Validation Study involves highway noise

data collection and TNM modeling for the purpose of data comparison. In 2002, Volpe completed

Phase 1 of the study. For this phase, over 100 hours of traffic noise data were collected at

seventeen highway sites around the country. The seventeen sites included: open areas next to

the highway with acoustically soft ground (e.g., lawn); open areas with acoustically hard

ground (e.g., pavement or water); and areas next to the highway with an open area behind a

single noise barrier. Results indicated that TNM Version 2.0 was, on average, over-predicting

when measured sound level data were not calibrated using a reference microphone, i.e., when

site bias was not accounted for. This issue of over-prediction initiated the development of

TNM Version 2.5, which addresses the over-prediction and also has other acoustical

improvements. This addendum to the Phase 1 report includes results generated with TNM Version

2.5, where the results show TNM’s improved performance.


Format:
PDF
Funding:
HW66 / AS036
Collection(s):
Federal Highway Administration Volpe
Main Document Checksum:
[+]
urn:sha256:a55139d1645ca1dfdd4bdbf94bb4b085b9aade6a9f6bfcccec23e7178617527c
Download URL:
https://rosap.ntl.bts.gov/view/dot/8919/dot_8919_DS1.pdf
File Type:

Supporting Files

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