Download or read book Statistical Analysis of FHWA Traffic Noise Data written by Y. Y. Ma and published by . This book was released on 1978 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Analysis of FHWA Traffic Noise Data written by Y. Y. Ma and published by . This book was released on 1978 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Statistical Analysis of FHWA Traffic Noise Data written by Y Y. Ma and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of the statistical analysis of FHWA traffic noise data collected in Colorado, Florida, North Carolina and Washington. Prediction equations of the peak dBA levels of trucks as functions of speed are derived for each of the axle groups: 2, 3, 4, 5, 6, 3-5, and each of the four states. These equations are used to establish vehicle reference emission levels for medium and heavy trucks. Similar results are derived for noise levels in octave bands at frequencies 31.6, 63, 125, 250, 500, 1K, 2K, 4K and 8K Hz. Attenuation rates are estimated for each of the four states. These results can be used in highway noise prediction models.
Download or read book Fhwa Traffic Noise Model User s Guide written by Cynthia S. Y. Lee and published by Createspace Independent Publishing Platform. This book was released on 2002-03-30 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: In March 1998, the Federal Highway Administration (FHWA) Office of Natural Environment, released the FHWA Traffic Noise Model (FHWA TNM) Version 1.0, a state-of-the-art computer program for highway traffic noise prediction and analysis. Since then, the FHWA, with assistance from the Volpe Center Acoustics Facility (Volpe Center) and Foliage Software Systems (FSS), have released updates of TNM (Versions 1.0a, and 1.0b) in March 1999 and August 1999, respectively. In support of the FHWA and the California Department of Transportation, the Volpe Center and FSS released Version 1.1 in September 2000. TNM 2.0 is the latest release of the TNM software. Two companion reports were released with TNM Version 1.0, a Technical Manual that describes the acoustics within TNM and a User's Guide. In addition, prior to TNM release, a data report was published that describes the vehicle noise-emissions data base within TNM. This document is an addendum to the FHWA TNM Version 1.0 User's Guide. It details the enhancements in the program up to and including Version 2.0.
Download or read book FHWA Highway Traffic Noise Prediction Model Final Report written by Timothy M. Barry and published by . This book was released on 1978 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Validation of Fhwa s Traffic Noise Model Tnm written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2013-12 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Volpe Center Acoustics Facility, in support of the Federal HighwayAdministration (FHWA) and the California Department of Transportation(Caltrans), has been conducting a study to quantify and assess the accuracyof FHWA's Traffic Noise Model (TNM) and make recommendations on its use. The TNM Validation Study involves highway noise data collection and TNMmodeling for the purpose of data comparison. Phase 1 of the study has beencompleted. For this phase, over 100 hours of traffic noise data werecollected at 17 highway sites around the country.
Download or read book Report No FHWA RD written by United States. Federal Highway Administration. Offices of Research and Development and published by . This book was released on 1978 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FHWA Traffic Noise Model TNM Pavement Effects Implementation Study written by United States Department of Transportation and published by CreateSpace. This book was released on 2013-12 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Volpe Center Acoustics Facility, in support of theFederal Highway Administration(FHWA), investigatedthe implementation of pavement effects inthe FHWA Traffic Noise Model (TNM). Three options were considered, resulting in the recommendation of two options: 1) implementation of user-defined pavement-specific emission levels (REMELs), with proof of adequate data; and 2) implementation of on-board sound intensity (OBSI)-adjusted tire/pavement noise source levels, implemented as a large database in the FHWA TNM and also as a user-defined option. Each option would also include adjusting for the pavement sound absorption by applying pavement-specific effective flow resistivity (EFR) values.
Download or read book Evaluation of the FHWA Traffic Noise Model TNM for Highway Traffic Noise Prediction in the State of Colorado written by Michael Hankard and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2002, CDOT undertook this study in an effort to better understand the complexities of the Federal Highway Administration's new Traffic Noise Model (TNM). The research involved three analysis.
Download or read book Highway Traffic Noise Analysis and Abatement written by United States. Federal Highway Administration. Office of Environment and Planning. Noise and Air Quality Branch and published by . This book was released on 1995 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tnm Version 2 5 Addenum to Validation of Fhwa Traffic Noise Model Tnm written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2013-12 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Volpe Center Acoustics Facility (Volpe) in support of the Federal Highway Administration(FHWA) is conducting a multiple-phase study to assess the accuracy and make recommendations onthe use of FHWA's Traffic Noise Model (TNM). The TNM Validation Study involves highway noisedata collection and TNM modeling for the purpose of data comparison. In 2002, Volpe completedPhase 1 of the study. For this phase, over 100 hours of traffic noise data were collected atseventeen highway sites around the country. The seventeen sites included: open areas next tothe highway with acoustically soft ground (e.g., lawn); open areas with acoustically hardground (e.g., pavement or water); and areas next to the highway with an open area behind asingle noise barrier. Results indicated that TNM Version 2.0 was, on average, over-predictingwhen measured sound level data were not calibrated using a reference microphone, i.e., whensite bias was not accounted for.
Download or read book Highway Traffic Noise written by and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculation of Road Traffic Noise written by Great Britain. Department of Transport and published by . This book was released on 1988 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersedes 1975 edition (ISBN 011553676)
Download or read book Tnm Version 2 5 Addendum to Validation of Fhwa s Traffic Noise Model Tnm written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2013-12-15 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Volpe Center Acoustics Facility (Volpe) in support of the Federal Highway Administration (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.
Download or read book Highway Safety Literature written by and published by . This book was released on 1979 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1979 with total page 1568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North Haven Mall Development Permit written by and published by . This book was released on 1983 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
